PICTURES OF MY VISIT TO THE "PREHISTORIC VALLEY" IN BACONAO PARK, SANTIAGO DE CUBA. CUBA

Dinosaurs were animals that lived millions of years ago.

Many dinosaurs were very big. But some were as small as chickens are today.

Most dinosaurs ate only plants. Some dinosaurs ate other animals. They were meat eaters.

Scientists aren't sure what color dinosaurs were. Some think dinosaurs might have been as colorful as many birds are today.

In 1902, part of a huge skeleton was uncovered in Montana. Later, another was found in Wyoming. From these bones the American paleontologist Henry Fairfield Osborn drew up the first pictures of this giant creature. He named it Tyrannosaurus Rex (meaning 'king of the tyrant reptiles') because it was the biggest meat - eating dinosaur then known to have lived on Earth.

Scientists in Argentina, South America, claim to have found the world's oldest dinosaur. This creature, called Herrarasaurus, is said to be 230 million years old.

Dinosaurs sometimes had accidents, and fossil bones have been found with fractures in them.

The most complete skeleton of a Stegosaurus ever found has been dug up at the foot of the Rocky Mountains in Colorado. It had to be hauled out of the earth by an army helicopter.

Your dentist's drill has other uses. In the laboratory, scientists often use dental drills to clear and prepare dinosaur bones.

Tracks left in the mud by dinosaurs provide clues as to how quickly they moved. By measuring the distance between footprints, experts have worked out that some dinosaurs could have reached speeds up to 25 mph.

Velociraptor was probably very fierce. A fossil found in Utah, shows its claws may have been up to 15 inches in length--as long as a three-year-old child's arm. These claws formed very effective hooks with which to hold prey.

Dinosaur land

The Libonectes

After the success of the film ‘ Jurassic Park ' many children are very much interested in collecting information regarding the different varieties of dinosaurs that lived millions of years ago. The Libonectes were not of the dinosaur specie category but under the marine reptile family called plesiosaurs. Plesiosaurs are marine reptiles lived during the early Jurassic period or Triassic period. Even though plesiosaurs were believed to be vanished, some people claim that animals alleged to be living in certain lakes might be living plesiosaurs. They make a claim seeing the animal Nessie, which is known to be living in Scotland, Loch Ness and in the Champlain Lake in the United States of America. Plesiosaurs were classified into two major sub-groups. They are larger headed, short-necked ‘pilosaurids' and small headed, long-necked elasmosaurs. Libonectes belong to the second category (i.e.) it had a long neck with small head. Even though, this classification has been made, some researchers do not agree upon this classification of Plesiosaurs. This is because, according to them some of the plesiosaurs falling under the first category (i.e.) pilosaurids also were to a certain extent related to the second category elasmosaurs in their appearance. Different dinosaurs coming under the category of pilosaurids were ranged from 2.4 to14m long (i.e.) 8 to 46 feet long in size. With the evolution, the pilosaurids with longer neck (i.e.) elasmosaurs tended to get even longer necks. All these had short tail and broad body. Libonectes is an extinct genus belonging to the plesiosaur order. It was known to have been lived in the late Cretaceous period. It was known to have been lived around 65 million years ago. It was an omnivorous (i.e.) it would have eaten both meat and plants. From the fossils of Libonectes, it was found that it can grow around 23-47 feet long (i.e.) 7-14m long and it was related to Elasmosaurus since it possessed the same body structure as that of the Elasmosaurus. It had large flippers and a short tail. Its skull had forward facing long teeth perfectly designed for catching squid and slippery fish. It would have kept its body strong by swallowing rocks and its four strong flippers would have helped it to swim quickly. It is believed that it controlled its buoyancy by consuming the bottom sea rocks. It was once believed that plesiosaurs would have been able to raise their neck above the surface of the water. But, from the fossils of Libonectes, it was found that the base of the neck was too stiff. So it might have able to move its head only slightly up and down and side to side. Libonectes is classified under Animalia kingdom, Chordata phylum, Sauropsida class, plesiosauria order and under the sub order plesiosauroidea and it belonged to the family of elamosauridae. In Texas, the specimen of different dinosaurs is being kept for display and they also have the skull of Libonectes. According to them, they found the specimen near Cedar hills in the Dallas county of Texas. Hope you might have got the required information regarding Libonectes

The Segisaurus

Nowadays, kids are very much interested in learning more information about different types of dinosaurs especially after the great hit of Jurassic park film. There are different types of dinosaurs like killer dinosaurs, plant eating dinosaurs, armored dinosaurs, duck bills dinosaurs and flying dinosaurs. One such dinosaur is segisaurus, which is a meat eater. Segisaurus was known to be lived in the early Jurassic period in North America (i.e.) 200 million years ago. The term ‘Segisaurus' represents reptile of Segi. Segi is nothing but the location from where this dinosaur was discovered. The term is spelled as ‘Say-ee-sore-uss'. Segisaurus was known to have been one meter (i.e.) three feet long. Researchers say that Segisaurus would have weighed around eleven pounds. This dinosaur belongs to the Theropoda class of dinosaurs. As said earlier, it is a meat eater and it would have eaten small animals. Since it belonged to a very early period, only a few bones of Segisaurus were found and from the bones it was discovered that it would have been a fast runner and it would have been able to dart from one side to another when it hunted the prey. The remains of Segisaurus was found by Max Littlesalt in the year 1933 in Segi Canyon, after finding the bones he reported it to the archeologists and research was done using the remains. The research was done by Charles Lewis Camp, who was a paleontologist. The remains consisted of portions of pelvis, limbs and vertebrae. It was found that Segisaurus would have resembled the well-known dinosaur called coelophysis. The only difference between these two dinosaurs would have been the bone type. Segisaurus would have had a solid bone, while coelophysis would have had a hollow bone. From further research, it was found that Segisaurus would have been related closely to procompsognathus. It was found that it would have been in the size of a goose, it was insectivorous and nimble, and even it might have consumed meat as well. It would have had a bird like body structure with an elongated and flexible neck and stubbiest body. Segisaurus might have had powerful legs with three toes and the leg would have been long as compared to the length of its body. It also had a long forearms and long tail. Scientists discovered clavicles in the bone of Segisaurus and they found it to be strange since clavicles were present only in dinosaurs that belonged to much earlier era. When the specimen of Segisaurus found it was linked with a sitting hen since the position of the dinosaur showed that. Other dinosaurs generally use the position of a sitting bird for staying sheltered and for sleeping. From the specimen it was found that Segisaurus would have been submerged in a sand layer, when it was sitting because of which it would have died. Along with the specimen of Segisaurus no other den or nest materials was found and so its hatching habits were not known. Very recently (i.e.) in September 2005, the remains of Segisaurus was again investigated and scientists found that it would have been a coelophysoid and would have been a relative of procompsognathus.

The Dallasaurus

Dallasaurus belonged to a family of Mosasaurs which were serpentine lizards. Dallasaurus were found in Dallas County which is located in Northern Texas . The meaning of this name Dallasaurus is lizard of Dallas . Their partial remains do not tell us much about them. However paleontologists have tried and are still trying to find more information on them. They are found in two parts. The first part that was found had skull but some body parts were missing. The second part had some body parts but had no skull. Studies then have revealed that these are the oldest mosasauroid along with Russellosaurus to be found in North America . Van Turner discovered this fossil some 16 years ago in Dallas . It took him many years to discover the mystery behind this mosasaur. In addition to this, the fossils were accidentally excavated at a construction site. They were sort of amphibians as they could live on land as well on lands. It is believed that they lived 92 million years ago. Interestingly Dallas was mostly under water then. These creatures were three feet long and lived in shallow waters of the sea as well as the shores. After a lot of research, paleontologists have proven that they had well developed limbs. These limbs enabled them to walk on land and water properly. In fact, Dallasaurus gives an insight to Mosasaurs. So in a way the study of Dallasaurus reveals the existence of some prehistoric creatures which could live both on land and water. These creatures were exclusively found in the North American continent. The fossils of Dallasaurus came handy for further research. Studies revealed that in later stages, the limbs of Mosasaurs developed into fins. They dominated the waters when the dinosaurs dominated the land. In reality the Dallasaurus was the first of a kind of this breed. Michael Polcyn of Southern Methodist University and Guadalupe National Park 's Gordon Bell Jr. in Texas researched on these fossils. Their research was a major breakthrough and thus we have the information on Dallasaurus. Their investigation throws light on the habitat, weather conditions they lived in and some more specific details. Dallasaurus is a missing link between the prehistoric animals and their evolution. What can be further said is that there were two groups of dinosaurs. One remained in the land and the other went to the sea, settled and lived there. These two types of dinosaurs lived millions and millions years ago and ruled the world. They probably had a harmony and an unsaid power equation between them. Dallasaurus also became extinct around the time when dinosaurs also became extinct. They mastered the marine life and lived according to your wishes in the waters. They ruled like kings and were very powerful creatures. Soon they started to control the waters and became predators of the water. A Dallasaurus is a discovery of its kind. It is something that scientists, paleontologists and archeologists are still working on. This is that area of research and study that attracts a lot of attention!

The Jeholopterus

The term Jeholopterus was derived from Greek and the meaning of the term is Jehol wing. The term is pronounced as Jay-hole-op-ter-us. This creature was known to have in the shores of the continent of Asia about 150 million years ago. In Asia, it was particularly known to have lived in the northeastern part of China in the Daohugou Beds. It would have got a wingspan of about 3 feet and they would have fed on insects. It would have got a blunt and large head with pointed tooth and large claws. The skin and hair remains of this creature are still preserved. Jeholopterus are classified under the kingdom of animalia and chordate phylum. Jeholopterus was different from the garden-variety of pterosaur. It differentiated from other pterosaurs by its unusually sharp and large claws. It might have got a widely articulated jaw, which it could open wider as compared to any other pterosaur. It would have got a cat-like head and a short tail. Some paleontologists believe that, Jeholopterus would have adhered to the backs of large dinosaurs and would have sucked their blood to feed themselves. But, this habit of Jeholopterus was not proved. This creature got its name from Xu Xing, Zhou Zhonghe and Wang Xiaolin in the year 2002. The scientific name of the genus is Jeholopterus ninchengensis. The term Jehol is derived from the place of China from where the fossils were found and the term pterus was derived from Greek word the meaning of, which is wings. The term ninchengensis was derived from the Nincheng County . The fossils were flattened into a counter slab and slab pair, in such a way that one part of the fossil is preserved in one part of the split stone and other parts in some other stone. The preserved parts include carbonized skin fibers, protofeathers and hair as well. The fibers are conserved around the body of the sample in a circle of light. The wing tissues are also conserved, even though the level is arguable, inclusive of the point of attachment to the legs. The arguable fact is that whether the lags are attached or not. In the year 2009, a report was published by Alexander Kellner, which shows the existence of three layers of fibers in the wing. The neck of Jeholopterus would have got seven to eight cervical vertebrae. They would have got twelve to thirteen dorsal vertebrae and three sacrals as well. They would have got five pairs of belly ribs. They are classified under reptilia class and pterosauria order. They are further classified under the suborder of Rhamphorhynchoidea under the family anurognathidae. Generally, short tail is unusual in case of rhamphorhynchoid, but they are common in anurognathids and so they are classified under the family of anurognathidae. The wing bones of Jeholopterus were healthy and they had short metacarpals. Jeholopterus would have got a curved and long hand claws. Their wing bones show that they would have attached to the ankle. They also had strong legs and the toes of the legs would have got curved claws. But, the claws in the legs are shorter than that of claws in the hands.

The Nemicolopterus

It is a long search of the scientists to find out if any new species comes into being in the recent period. Actually there were many that were shrouded in the black pal of time. The scientists with an effort to bring back the lost species continue their search round the globe. They are never baffled. They bring before us new genus, new species that were beyond our imagination. Scientists with their prolonged effort have made the impossible - possible with their untiring effort. Nemicolopterus belong to the Pterodactyloid Pterosaur genus. Until 2008 we were not associated with the name. It is assumed that the species frequented in Jehol Biota about 120 million years back. It was not a giant bird; just a small one having a wingspan of 10 inches. It was even smaller than the species of the hatching pterosaurs. The specimen that was found by Wang in the year 2008 was nothing but the fragments of ossification of toes and sternum. From these fragments it was assumed that the species was nothing but a hatchling. According to Darren Nash, the Pterosaurs were highly precocial. As a result, the fusion of bones and ossification occurred at every early stage. Thus the conclusion goes thus that the Nemicolopterus might be a hatchling of the Sinopterus genus. It is assumed that the name Nemicolopteus has been derived from the Greek word forest dwellers that have wings. In Greek 'Nemos' means 'forest', 'ikolos' means 'the dweller' and the 'pteros' means nothing but 'wings'. And finally 'crypticus' means 'hidden'. Thus if we may analyze the total segments we find the group of words ' The flying forest dweller that is hidden'. We came to know of the N.Crypticus from a fossil. Beijing Vertebrate Paleontology and Paleoantropology kept it in their custody. The fossil of Jiufotang Formation belonged to the Aptian age. The fossil was discovered in the Yaolugou Town of the Jianchang County of the Liaoning province of China . We came to know that Nemicolopterus was a Pterosaur that had no tooth. According to Wang, the bird was a intermediate between the Pterosaurs that had tooth of the genus Ornithocheiroidaea and the toothless genus of he Dsungaripteroidea. Nemicolopterus was a very small bird. But according to scientists, the small birds evolved into the flying big birds like Quetzalcoatlus. Nemicolopterus used to clutch the tree branches with the tiny claws. They roamed freely from one branch to one branch. But contradictions loom large when most of the pterosaurs are retrieved from the sea bed. It highlights that the little birds not only roamed on the tree tops they were accustomed to catch fish in the sea beach. They used to sit on the rocks or cliffs near the sea water so that the fish could be grabbed quite easily. But when the question of the Nemicolopterus comes to the forefront, it is revealed that it was such a small bird that lived on insects. They used to spend time roosting on the trees in leisure time.

The Globidens

Globidens are marine reptiles that belong to the Triassic era. They were survivors of the earth about 215 million years ago. The globidens were a part and sect of the mosasaur lizards. They were the largest living lizards. The fossils of the Globidens indicate that they were about 20 feet (i.e.) 6m in length and they had sharp teeth . But, researchers could not find out the weight of the dinosaur. Fish were a major part of the diet of Globidens. These lizards had flippers along with a long tail and neck. Their heads were pointed. The fossils of the Globidens indicated that it had spent most of its time under water, but it crawled onto the land with the help of its strong legs. The Globidens had more or less the same appearance as mosasaur lizards since it had the same type of flippers, powerful jaws and laterally flattened tail. In the year 1912, Gilmore is the first person to describe about the Globidens. The second species was described in the year 1975 by Russel and the third species in the year 2007 by Martin. The Globidens had flattened limbs which functioned as hydrofoils. The hind limbs of the species of dinosaurs were less significant and they helped in surface control and in stabilizing like sea turtles. It has moreover been seen from the bones of its limbs that these dinosaurs crawled through the water beds just like the small freshwater turtles. The pectoral girdles of the Globidens were mightily built and the girdles made it possible to attach the strong muscles. And the researches showed that the pectoral girdles were located under the shoulders. Hence, they were used by the dinosaur species for swimming. Apart from the speciality of the limbs of the Globidens, the tail bears a resemblance to aquatic reptiles. The powerful tail muscles enabled the amazing species of dinosaurs to heave it from side to side along with a control to use it as a weapon as well. Globidens are regarded to be ovoviviparous, which means that they reproduced by eggs which developed inside the body. The fossils of Globidens displayed a deficiency in ossification and a basic elbow joint in the progression of olecranon of the ulna. Such a feature has enabled these dinosaurs to crawl over to the beaches during the egg laying process. The specimen was found in similar type of deposit and at altered developmental stages in and around the same locality. Hence, it is believed to sustain an ovoviviparous model. But, the fossils of the female Species of the Globidens indicated that it had foetuses inside the lower segment of the thoracic cavity. So there were a lot of details found about these dinosaur species from its fossils. But, some of the conclusions are still unsolved. The Globidens evolved during the dinosaur era and ruled as the water lords. They were strong and had all the weaponry and armour in their body. If you wish to gather more details about this amazing species of dinosaurs.

The Hatzegopteryx

Hatzegopteryx is a species belonging to the family of azhdarchid pterosaur. The fossils of this creature were found in Transylvania. From the left humerus, skull fragments and other remains of Hatzegopteryx researchers found that it would have been a huge animal with a wingspan of about 40ft (i.e.) twelve meters. This species received this name in the year 2002 from Romanian Paleontologists Zoltan Csiki and Dan Grigorescu and French Paleontologist Eric Buffetaut. Its biological name is Hatzegopteryx Thambema. The term Hatzeg was used to denote the basin of Transylvania called Hateg Island and the fossils of this species were found from here only. The term pteryx is a Greek word pteryx and the meaning of the term is wing. The term thambema was also derived from a Greek word and the meaning of the term is monster. The name itself refers that it was a huge sized species. Hatzegopteryx was known to have lived around 65 million years ago, during the late Cretaceous period. The fossils contained the damaged proximal part of a left humerus and the back part of the skull. From the same area, researchers also found a femur of about 38.5cm long and they assumed that it would also have been belonged to Hatzegopteryx. Generally, the skull of pterosaur would have been made up of lightweight struts and plates, but the skull of Hatzegopteryx was heavy with its robust construction. With the heavy weight of the skull, researchers assumed that it would not have been able to fly. But, the wing bones of this creature have some similarities with that of flying pterosaurs. So, they decided that for the purpose of flying, the weight of the skull of this pterosaur might have been reduced by following some unconventional methods. They also suggested that they would have been able to reduce their weight with the help of internal structure of the bones in the skull, which were full of small hollows and pits up to 10mm long. This was partitioned by a matrix of thin bony struts and they were able to find this feature in some part of the wing bones of Hatzegopteryx as well. They concluded that this would have allowed a stress-resistant construction and this would have remained lightweight, enabling them to fly. The researchers anticipated the size of Hatzegopteryx by associating the humerus fragment of Hatzegopteryx with that of the humerus fragment of Quetzalcoatlus. The humerus of Hatzegopteryx was 263mm long, while that of Quetzalcoatlus was 544 mm long. With this comparison they estimated that Hatzegopteryx would have been slightly longer that Quetzalcoatlus. They also noted that the wingspan of Hatzegopteryx was about 12 meters, while in the case of Quetzalcoatlus, it was about 20 meters. Finally, they came to a conclusion that the skull length of Hatzegopteryx would have been 2.5 meters, while its wingspan would have been twelve meters. Hatzegopteryx was classified under the kingdom of Animalia with chordata phylum. It is further classified under the class sauropsida with order pterosauria and suborder pterodactyloidea and it was known to have belonged to the family of Azhdarchidae.

The Henodus chelyops

Henodus chelyops are also known as” Turtle-Faced Single Tooth". Henodus chelyops was a type of placodont, which during the Carnian stage of Late Triassic period. The relics of Henodus chelyops were found in Germany and Tübingen. The length of the fissile was around 3.3 ft that means 1 meter. The original name of this dinosaur is just henodus and henodus chelyops is its biological name. This has received the name from Von Huene in the year 1936. Henodus Chelyops is classified under the kingdom of animalia, under the phylum chordate and class sauropsida. It is classified under the superorder sauropterygia, under the order placodontia. Henodus chelyops was nothing, but the placodont that had the maximum similarity to the modern turtle. It also had a shell produced from a plastron on the underneath and a covering on the top portion. The exterior portion is well extended further than the limbs, and was prepared by different plates of bony scutes and plated by covers of horn. On the other hand, the shell was created by several pieces of bone and the number of bones was higher when you compare this to the turtles, forming a medley prototype. The protective covering was combined to its back, and its limbs were positioned in the usual positions, different from the turtle, where they are positioned within the ribcage. The feeble limbs of Henodus chelyops propose it tired little, if any time on ground. Henodus chelyops are considered to be ovoviviparous, which signifies that they reproduced by their eggs which developed inside the body. Such a feature has enabled these Henodus chelyops to crawl over to the beaches during the egg laying method. The specimen was found in similar type of deposit and at altered developmental stages in and around the same locality. Hence, it is believed to sustain an ovoviviparous model. But, the fossils of the female Species of the Henodus chelyops indicated that it had foetuses inside the lower segment of the thoracic cavity. The Henodus chelyops are also had a particular tooth on each side of the mouth, while the rest of the teeth were restored by a mouth. These teeth were plane/flat to squash bottom house shellfish. The head is square in shape and the eyes are situated ahead of the head. The Henodus chelyops are the lone placodont thus far appeared in non-marine places, telling it may have existed in salty or freshwater ponds. So there were a lot of details found about these Henodus chelyops from its fossils. But, some of the conclusions are still unsolved. The Henodus chelyops evolved during the dinosaur era and ruled as the water kings. They were strong and had enough covering for their protection on their body. If you wish to gather more details about this amazing species of Henodus chelyops , then take the help of internet. So, through the help of internet, you will be able to get millions of result showing the best information on Henodus chelyops and you can get the images of these wonderful species are well.

The Megalosaurus

Megalosaurus – the ferocious meat eater Megalosaurus was one of the first dinosaurs to be found and named. It should be pronounced as Meg-ah-low-sore-uss. The meaning of the word Megalosaurus is ‘great reptile'. It was a large meat-eating dinosaur and was known to have been lived around 175 million years ago during the Jurassic period. It was discovered in England in the year 1676. It was named by William Buckland in the year 1824. Later in the year 1827 Gideon Mantell assigned the species name Megalosaurus bucklandii to honor Mr. William Buckland. Megalosaurus was known to have been around 30 feet (i.e.) nine meters long and it 10 feet tall (i.e.) three meters. This dinosaur was known to have been weighed around one ton. The dinosaur had a bulky body with heavy bones and long legs with clawed feet. The arms of the dinosaur were short as compared to the legs and the hand three fingers with sharp claws. It also had small bony knobs over each eye and large powerful jaws with sharp and long teeth, which enables it to eat meat. It was a fierce hunter and killer that could kill even large sauropods, which is another kind of dinosaur. It was known to be more intelligent as compared to the other dinosaurs. The intelligence was measured by its relative brain to the body weight, which is also called as Emotional Intelligence. Megalosaurus was relatively fast runner as compared to other dinosaurs. The speed of the dinosaur was judged by scientists on the basis of their morphology (i.e.) the characteristics like estimated body and leg length. The speed was also judged on the basis of the fossilized track ways of the dinosaur. Megalosaurus was a lizard-hipped dinosaur also known as saurischian. Initially, in the year 1676, a part of the skeleton of Megalosaurus was found at a limestone quarry at the city of Cornwell near oxford, situated at England. The bone was then sent to Robert Plot, who was the professor of chemistry at the Oxford University and he was also the first curator of the Ashmoean Museum. Pr. Robert plot identified it to be the thigh bone of a large animal, which was then found to be the bone of Megalosaurus. Then, more discoveries began in the year 1815 to know more about this dinosaur, which resulted in the discovery of a bone at the stones field quarry situated at the north of Oxford, which was acquired by William Buckland, who was the dean of Christ church and the professor of Geology at the Oxford University. Pr. William Buckland found some bones like fragments of pelvis, some vertebrae, hind limbs and a piece of lower jaw with teeth, which belonged to different Megalosaurus, with the help of which he found that all the bones belong to a giant animal which belonged to the lizard family and then he named it as Megalosaurus. Among the different dinosaurs, Megalosaurus was regarded as the dangerous and ferocious dinosaur since it was a meat eater. Hope, you would have understood about Megalosaurus.

The Kronosaurus

Kronosaurus was the largest marine reptile that ever lived. It belonged to the category of plesiosaur, which is a meat-eating reptile. As considered by most of us, Kronosaurus is not a dinosaur, it is a plesiosaur. It was known to have been lived in the early cretaceous period and it belonged to the Dolichorhynchopidae family. It is known to have been lived around 110 million years ago. The term Kronosaurus was derived from the Greek word and the meaning of the term is krono's lizard. Kronos was known to be the Greek god of time, who is known to have eaten his own children for the purpose of guarding his powers. The term Kronosaurus is pronounced as crow-no-sore-us. Kronosaurus is known to have been lived in the country of Australia and it was a highly skilled swimmer. Apart from Australia , these plesiosaurs would have been lived in South America and Columbia as well. The fossils of Kronosaurus were found in Queensland , Australia in the year 1889 and it was found by A. Crombie. It was named in the year 1924 by Longman. Kronosaurus were known to be the ferocious predators of the sea and it would have been lived in the open oceans, but would have also required swimming to the surface since it was an air breathing reptile. They might have been able to move a little in the land like seals. From the fossils of Kronosaurus, it was found that it would have got a pointed tail, short neck with four long flippers and a huge head. It has a rounded teeth and strong jaws and tooth of the Kronosaurus was so strong that it would easily crush the shells. The four paddle-like flippers had enabled the Kronosaurus to move around water like sea turtles. The diet of these plesiosaurs was large squids, ichthyosaurs and sharks. It was known to have been around 30 feet (i.e.) 9m long. The head of Kronosaurus alone was around 9 feet (i.e.) 1/3 rd of the total body length. It has been found that it would have been weighed around seven tons. Even though, the Kronosaurus were known to have been lived in oceans, it would have swim to the surface for laying eggs as is being done by turtles nowadays. Like turtles, Kronosaurus has also laid eggs in nests dug in the sand. According to a research Kronosaurus made its living just like the present day shark in such a way that it had eaten every all animals living in the water coming in its way. It has been found that it did not restrict itself in eating just squids and fish, but feasted occasionally with other aquatic reptiles as well. From the fossils of Kronosaurus, researchers have found some stones in their stomach and they assumed that these stones might have been consumed by the Kronosaurus for grinding up their food or the stone might have also been used as ballast for the purpose of diving. Hope, you might have got the required information regarding Kronosaurus.

The Lesothosaurus

Lesothosaurus- the Bird Footed Dinosaurs Lesothosaurus had a very near relation with the Fabrosaurus. It got its name from the country in Africa where it was found. It was found in Lesotho , so it got its name Lesothosaurus. Lesotho means lizard so it was like lizards. It is said by the researchers that it was a member o the “bird-footed” ancestors also known as Ornithopod. It was God's creations, which were made to surf around and run away whenever it needed to protect itself. Its back or hind legs were too strong and had three major claws. Plus it had an additional small claw in the high shin. It had four fingers in small hands and a bump like thumb. Lesothosaurus is like Fabrosaurus. It was of 3 feet long. It existed for more than 200 million years ago. Researchers and paleontologists say that these dwelled in the late Triassic era. Lesothosaurus had narrow teeth not like its close kins. Its frontal teeth were smooth and shiny along with sharpness. It looked like notched arrow heads. As it was the member of the “bird footed” ancestors or ornithopod, few of the other small dinosaurs were thought to belong of the same group. It had created some misconceptions about the small dinosaurs. It is said that it lived for minimum 70 million years before they died. In the long run, more powerful “bird hips” came to existence and eventually they were on extinction. Lesotho was found in Lesotho , Venezuela . It was herbivorous or low growing plants were its food. Its length was 1 m. Their lifestyle is considered in today's world as “day gazelles” that used to dwell and surf. They used to look for their food and used to be scared of their environment for danger. They use to escape from their predators when they would be near to them. They were very meek creatures who used to run for their lives when sensed danger. These Lesothosaurus had very little head with large eyes. They had an elongated body and a 3 feet tail. Its mouth was tipped with a sharp beak. It had long muscular legs; hollow bones which were light weighed and would outsmart most of its predators by running. It is considered as the most primitive dinosaur in the ornithischians family. These had two major “armor-plated” species named as “Stegosaurus” and “Ankylosaurus” and the three horned headed “Triceratops”. These Lesothos were small, supple and bipedal which had a bearing of apparently some basic resemblances to the huge quadrupled species of the family. The hip structure and jaws which was designed to eat plants showed a link to the next family kins but they were separate dinosaurs. They evolved in the early Jurassic era. At the first glance, it would seem like a lizard is walking on its strong hind legs. But lizards can ever hold up their head high and walk. They can not even walk on their limbs. Utmost they can crawl. Reading about Lesothosaurus is a magnificent topic. You would come to know about everything they used to do.

The Haplocanthosaurus

Haplocanthosaurus - the Dwarf Dino of 49 Feet The name Haplocanthosaurus stands for a dinosaur that had simple spine. It lived in this earth between144 to 156 million years ago in the late Jurassic period. This large animal was originally named as Haplocanthus priscus by Bell Hetcher in the year 1901 when the remnants of the body were discovered in Colorado in the US . But as the name Haplocanthus priscus was occupied by some other species Bell named it Haplocanthosaurus instead of Halplocanthus. The meaning of Haplocanthus goes thus, the dinosaur with single spike. In the year 1999 regarding Haplocanthosaurus Jose Bonaparte declared that Haplocanthosaurus differs very much from other sauropods. But they loomed large at different corners of the earth along with large animals. They had a large body and they moved in a slow pace. They needed enough food to meet the need of the metabolism. As a result they had to move frequently in quest of food all the while. The haplocanthosaurus preferred to take plants hence they had no ferocity of their own they were after their own target chewing large branches of trees all the time after their sweet will. Haplocanthosaurus was respectively smaller in size in comparison of the other gigantic creatures. The average height was approximately 14 meters (46 feet) with 14.5 metric tons of weight. It evokes real wonder how such a small creature could cope with its giant counterparts and kept its existence secured amid the fierce ones. Haplocanthosaurus could easily be grouped with the Cetiosaurus much in resemblance with it but according to scientists it may be grouped in a separate manner for it had a structure with advanced vertebra. The scientists classed the little Haplocanthosaurus with the Dicraeosaurus that had the same vertebra structure. But they ruled out the possibility and classed the species with another type of sauropod, the Dicraeosauridae. It was highlighted that Haplocanthosaurus had in common with the Brachiosaurus. But the features were limited to high shoulders, long neck and the short tail. It was nothing but a result of the parallel evolution that took place not through direct relationship with that one. The body parts of he Haplocanthosaurus that were found are a partial skeleton that had no skull. The length of it was 21.5 meters and it weighed about 25 tones. The scientists are of opinion that the Haplocanthosaurus was the last one of the large Cetiosaurids. Though the Cetiosaurus are never related with he Cetiosaurus of England the body parts of the species seem to belong to other sauropods of the referred time. Naturally it comes to the mind of the scientists that the two species lived in the same period but they could not bear the burnt of the mid Tithonian destruction. According to the paleontologists, Haplocanthosaurus was regarded small in comparison with the other giants that went on scavenging the vast tracts of lush green tracts in the Jurassic period. When other Morrison sauropods had a length of about 70 feet, the Haplocanthosaurus was not more than 50 feet with an average weight of 13 metric tons. Two specimens of the dinosaurs came into the limelight so far, one is H.delfsi and the other is H.priscus.

The Juravenator

Juravenator – The Beautiful Tiny Dinosaur Juravenator is a type of small ceelurosaurian dinosaur, which was known to have lived in the Jura Mountains of Germany about 150 million years ago. The term Juravenator was derived from the Greek and the meaning of term is Jura Mountains hunter. The term is pronounced as Joor-ah-ven-ate-or. It is known to have belonged to the Jurassic Era. Juravenator is known to have been two feet (i.e.) 70 cm long. It would have weighed around 300 grams. It was found that the food habit of Juravenator would have included insects and fish. Juravenator was regarded as the member of Compsognathidae family, which makes it a close relative of sinocalliopteryx and sinosauropteryx. The fossil evidence of Juravenator showed that it would have had a downy, feather like covering. But, some parts of fossilized Juravenators' skin demonstrate that it would have been a normal dinosaur without any feathers. According to Mark Norell, a paleontologist suggested the following facts about Juravenator: • Like some partially feathered birds, Juravenator might have got feathers in some parts of the body. But, initially it might have had full feathers. • The Juravenator might have lost their feather as they grow up or they might have lost some feathers seasonally. The reports regarding Juravenator differed from initial study and further studies. During the initial study the scientists placed Juravenator under the category of compsognathids. But, later studies showed that Juravenator was not a compsognathids and it belonged to the Maniraptora group. As far as feathers of Juravenators' are concerned, it is not actually known whether they had feathers or not. Juravenators are regarded as the tiniest dinosaur and it belongs to the Animalia kingdom, chordate phylum, reptilia class and saurischia order. Juravenators were called with the nick name ‘borsti'. The skin impression from the tail area of this dinosaur showed that it would have had a scaly hide. The remains of the Juravenator were found from Southern Germany and with the help of these remains, questions were raised among the scientists regarding how feathers evolved from dinosaurs to bird. According to researchers, Juravenator would have had a similar appearance of the fleet-footed carnivorous dinosaurs that troubled a young girl on the beach in the opening scene of the film ‘the lost world' and this type of dinosaur also appeared in the second Jurassic park movie. Some researchers say that the well-preserved bone structure of the Juravenator shows that it would have had feathers like other feathered dinosaurs since all the close relatives of this dinosaur was known to have had feathers. But, some researchers have a different idea that the small patch of skin from the tail of the creature shows no signs of feathers. The second group also argues that the skin of Juravenator is different from other feathered dinosaurs. So, it was feather less. Since the researchers could not arrive at a conclusion regarding the feathers of Juravenator. They concluded that they might have lost their feathers as age advances, initially they might have had feathers, but they might have lost their feathers later.

The Giraffatitan Brancai

Giraffatitan Brancai is a dinosaur that many people have seen, but many are unaware of the dinosaur. For 70 years it was known as a species of Brachiosaurus, & most illustrations of Brachiosaurus are based on a skeleton of Giraffatitan. Brachiosaurus Altithorax by Elmer Riggs in 1903. Werner Janensch then found a similar fossil in 1914, which he named B. Brancai. In 1988, Gregory Paul realized that B. Altithorax & B. Brancai were not as closely related to each other as previously thought. He elected them to be two subgenera, & in 1917 George Olshevsky proposed B. Brancai to be separated into an entirely new genus, Giraffatitan. It is still widely known as Brachiosaurus, since some argue about the number of differences between fossil finds that necessitate separate genera. Giraffatitan & its family took a decidedly different shape from most Sauropods. Their front legs were taller than their hind legs, indicating that they held their neck upright. This however, poses the question of whether they were warm-blooded or cold-blooded creatures; multiple hearts would have been required to push cold blood up the neck against gravity, but the head was very small, suggesting it could not have a high enough food-intake for a warm-blooded animal, which would only require one heart.

ZHEJIANGOPTERUS

The term Zhejiangopterus was derived from a Greek word and the meaning of the term is Zhejiang The term Zhejiangopterus was derived from a Greek word and the meaning of the term is Zhejiang wing and the term is pronounced as zhe-zhang-op-ter-us. This creature was known to have lived in the coastal area of Asia, particularly in China , during the cretaceous period about 85 million years ago. Zhejiangopterus was known to be a moderately large pterosaur.

According to researchers Zhejiangopterus would have fed on fish and it would have had a wingspan of about 16 feet. But, the researchers who came in the later years say that it would have got a wingspan of about 3.5m. They also say that it would have got a long head and neck with lack of crest. It belongs to the group of pterosaurs. According to researchers Zhejiangopterus would have got a body that differs from other pterosaurs in such a way that it would not have got any ornamentation on its head like other pterosaurs such as Tupuxuara and Tapejara. It would also have differed from other pterosaurs by its unusually long pointy head, long neck and extra-long legs.

Generally, the fossils of some pterosaurs are rare to find, but researchers have found compound, relatively whole fossils of Zhejiangopterus. The genus got its name from Chinese paleontologists Wei Feng and Cai Zhengguan in the year 1994.

The biological name of this species is Zhejiangopterus Linhaiensis. The term Zhejiang was derived from the place where it is known to have lived, Zhejiang province of China and the term opterus was derived from the Greek term ‘pteron', the meaning of, which is wing. The second term Linhai refers to the city of Linhai of China .

The skull of Zhejiangopterus was initially found in the year 1986 and it was researched by a team of researchers from the Zhejiang Museum of Natural History. Later in the year 1988, a complete skull of Zhejiangopterus was found in the same area.

Later in the early nineties, six more fossils were found from the Tangshang formation. According to researchers, the skull was perfectly arched, it was long, and it also lacked keel or other crest normally found in other related species. The beak was thin, it lacked teeth and it was sharply pointed and thin as well. It would have got elongated cervical vertebrae. Its upper arm bone was double the size of its upper leg bone and it was thin and strong as well. Even though, the wings of Zhejiangopterus were short, they were strong.

Zhejiangopterus was originally classified under the Nyctosauridae family since it possessed edentulous jaws and notarium and it lacked a cranial crest like Nyctosaurus. But, later in the year 1997 a paleontologist named David Unwin, determined that they were closely related to Azhdarchidae.

Zhejiangopterus are scientifically classified under the kingdom of Animalia , under Chordata phylum. They are classified under the class sauropsida and under the order of pterosauria. They are further classified under the suborder pterodactyloidea.

Hope, you might have got the required information about the wonderful species that existed several million years ago called Zhejiangopterus and the term is pronounced as zhe-zhang-op-ter-us. This creature was known to have lived in the coastal area of Asia, particularly in China , during the cretaceous period about 85 million years ago. Zhejiangopterus was known to be a moderately large pterosaur.

According to researchers Zhejiangopterus would have fed on fish and it would have had a wingspan of about 16 feet. But, the researchers who came in the later years say that it would have got a wingspan of about 3.5m. They also say that it would have got a long head and neck with lack of crest. It belongs to the group of pterosaurs. According to researchers Zhejiangopterus would have got a body that differs from other pterosaurs in such a way that it would not have got any ornamentation on its head like other pterosaurs such as Tupuxuara and Tapejara. It would also have differed from other pterosaurs by its unusually long pointy head, long neck and extra-long legs.

Generally, the fossils of some pterosaurs are rare to find, but researchers have found compound, relatively whole fossils of Zhejiangopterus. The genus got its name from Chinese paleontologists Wei Feng and Cai Zhengguan in the year 1994.

The biological name of this species is Zhejiangopterus Linhaiensis. The term Zhejiang was derived from the place where it is known to have lived, Zhejiang province of China and the term opterus was derived from the Greek term ‘pteron', the meaning of, which is wing. The second term Linhai refers to the city of Linhai of China .

The skull of Zhejiangopterus was initially found in the year 1986 and it was researched by a team of researchers from the Zhejiang Museum of Natural History. Later in the year 1988, a complete skull of Zhejiangopterus was found in the same area.

Later in the early nineties, six more fossils were found from the Tangshang formation. According to researchers, the skull was perfectly arched, it was long, and it also lacked keel or other crest normally found in other related species. The beak was thin, it lacked teeth and it was sharply pointed and thin as well. It would have got elongated cervical vertebrae. Its upper arm bone was double the size of its upper leg bone and it was thin and strong as well. Even though, the wings of Zhejiangopterus were short, they were strong.

Zhejiangopterus was originally classified under the Nyctosauridae family since it possessed edentulous jaws and notarium and it lacked a cranial crest like Nyctosaurus. But, later in the year 1997 a paleontologist named David Unwin, determined that they were closely related to Azhdarchidae.

Zhejiangopterus are scientifically classified under the kingdom of Animalia , under Chordata phylum. They are classified under the class sauropsida and under the order of pterosauria. They are further classified under the suborder pterodactyloidea.

Hope, you might have got the required information about the wonderful species that existed several million years ago called Zhejiangopterus.

HAINOSAURUS

The Hainosaurus

Hainosaurus is an extinct dinosaur species that evolved from the family of the mosasaur species of lizards and they got this named because of the Haine river, where they known to have lived. They were among the largest mosasaur dinosaurs and measured up to 15 metres or 49 feet in length. Thus, the hainosaurus species came under the top predators of the dinosaur era. These dinosaurs were known to prey on turtles, other smaller species of dinosaurs, fish and sharks. The hainosaurus species of dinosaurs were discovered during the period of the 1960s. They were believed to have lived about 200 million years ago. So they were upheld to be a very distinct species of dinosaurs. Their fossils were of utmost importance to researchers and dinosaur experts. So, every piece of their bone gave the researchers a dimension to look at the species. The hainosaurus were classified under the animalia kingdom, under the phylum of chordata, sauropsida class, squamata order and scleroglossa suborder. There were known to have belonged to the Mosasauridae family and Tylosaurinae subfamily under the genes name of hainosaurus. The hainosaurus had an elongated body which was perfectly built for agility and speed under water. They had flippers along the sides which were like fins. Their tail was also curved in the form of fins. This allowed them to swim very fast and swiftly in water. They had a sharp snout with sharp teeth as they evolved from the mosasaur species which, everyone knows were known to have sharp teeth to tear apart prey. The hainosaurus were one of the most strong and dominant aquatic animals in those times. They had the greatest built for water life. They emerged as one of the largest and most feared dinosaur species. The fossils of these dinosaurs indicated that they were built completely for aquatic life. They were not able to go on land as they had no limbs, but a pair of fins. These dinosaurs were quite slim and had torpedo like body to get that speed to pierce through the water. The hainosaurus were viviparous which meant that they bred their eggs inside their bodies. They had to lay eggs in water as they were not able to go on land. But this thesis was not completely satisfactory as their fossils also indicated that they gave birth to young ones. Their pelvic bones displayed that they given birth instead of having eggs. The sample was found in related types of remains and with some form of transformed developmental periods in and around the same locality. Hence, it is assumed to keep up as an ovoviviparous model. But, the fossils of the female hainosaurus dinosaurs showed a sign of having foetuses inside the lower sections of the thoracic cavity. Hence, there were a numerous amounts of facts claimed regarding these dinosaur species by research on its fossils. But, a few of the theories are still mystifying. The Hainosaurus developed in the dinosaur era and reigned as the water devils. They were well-built and had all the armour to be a feared predator.

LEXOVISAURUS

The Lexovisaurus

Lexovisaurus - The Dinosaur with Plates

Lexovisaurus is a dinosaur that had a medium size with enough plates on the body. They were found sometime during Middle to Late Jurassic era. They were named Osmosaurus in the beginning. But later on they were again renamed as Lexovisaurus. The name Lexovisaurus means Lexovian lizard. This again comes from the Celtic culture. Their fossils show them to be a member of the stegosaur family. These were group of herbivorous dinosaurs. They were primarily found in the Northern Hemisphere. Their fossils were found all across China , England and North America .

Not much is known about them. The remains of this species were found in England and France . In the year 1957, Robert Hoffsetter named them Lexovisaurus. They were named after a tribe which used to inhabit the same place. This tribe was called the Gallic tribe.

DINOCEHPALOSAURUS

The Dinocephalosaurus

Dinocephalosaurus is a genus having long neck. These are found in the Triassic seas many billion years ago. The name Dinocephalosaurus means terrible headed lizard. The skull of this specimen was known to be discovered near xinmin in Guizhou province. Later in the same place another specimen with head and the postcranial skeleton without tail has been found. First record of discovering this specimen was carried out in China where not only the specimen of this dinosaur, but the specimens of some other dinosaurs were also found.

Dinocephalosaurus can be closely compared with that of the Tanystropheus as both these are protorosaurus having long neck, which is twice than their bodies. The length of the total body is half of the length of the neck. The classification of Dinocephalosaurus is as follows:

Dinocephalosaurus is known to have belonged to animalia kingdom, chordate phylum, reptilian class, archosauromorpha infraclass, prolacertiformes order, tanystrophidae family and dinocephalosaurus genus.

From the skeleton of the dinocephalosaurus the following information were found by the researchers:

Dinocephalosaurus has a minimum of 25 cervical vertebrae making the neck long to approximately a length of 1.7m where as the body is approximately 1m. The long neck in the Dinocephalosaurus is used to capture the prey. Dinocephalosaurus is different from the other protorosaurus as it is fully aquatic, but it lays its eggs on the land. Dinocephalosaurus retain the juvenile characters even in the adult stage. This means that it will retain its character even after it grows.

The studies on the Dinocephalosaurus revealed that the Dinocephalosaurus lived in the shallow murky water of the sea. It is believed that the Dinocephalosaurus take fish and squid as its food. As the Dinocephalosaurus lives in the shallow water its long neck allow it to approach the prey easily. Dinocephalosaurus has a unique strike capability that by flaring its cervical ribs by creating a vacuum it can increase its esophagus volume. All the cervical ribs are articulated near the anterior end of the cervical vertebrae this makes it to have pronounced transverse processes for muscle attachment which helps to flare out its cervical ribs. This makes the Dinocephalosaurus to prevent the creation pressure wave by which the fish will get alerted. And the Dinocephalosaurus can grab the prey and it is possible to hold it with the fangs on its upper and lower jaws. It is believed that the Dinocephalosaurus is able to swallow the whole prey which it captures.

According to studies and researches, the Dinocephalosaurus stays in the shallow murky water and the entire body is being rested in the water. And the neck of the Dinocephalosaurus is swiftly lifted over the water and it strikes the fish which pass over and it captures the fish. The researches state that Dinocephalosaurus is a poor swimmer. The flattened torso, and the skull having the eyes on the top of its head and the upward curving of the snout are the remarkable features which make the Dinocephalosaurus to have a lie in wait style of capturing prey.

PROCMPSOGNATHUS

The Procompsognathus

Procompsognathus, when first discovered in Germany & described in 1913, was regarded as an ancestor to the 3 foot Compsognathus, which held the title for smallest dinosaur until the discovery of Microraptor, a pigeon-sized gliding Dromaeosaurid. It is now thought that Procompsognathus does still belong in the Coelurisauria order, but the crushed fossil does not supply enough information to classify it further. Procompsognathus' only fossilized remains, named SMNS 12591, consists of a crushed & fragmented neck & tail, with the arms & hips badly damaged as well. The supposed head pointed it towards being a Coelophysid, but it is now thought to be a different animal's, pushed close to the Procompsognathus' body. The dinosaur Procompsognathus Triassicus features heavily in & was popularized by the first Jurassic Park novel, however they were depicted as similar to birds, while actually having less relation to them than T. Rex which was made out to lumber slowly, nothing like a bird. Michael Crichton also scripted the dinosaurs as poisonous, based on no fossil evidence.

EFAASIA

The Efraasia herbivore dinosaur was first discovered in Baden-Wurttemberg, Germany by Eberhard Fraas.

Efraasia's Fossils have been identified incorrectly, at least, four times in total. Originally these Efraasia fossils were named under the Rauisuchian family as a Teratosaurus(not a Efraasia), named by Friedrich Von Huene in 1908. Rauisuchians were reptile predators in the late triassic Period. On a closer look at the Rauisuchians and the Teratosaurus by a Eberhard Fraas, he found that the fossils more closely resembled a Thecodontosaurus. In 1932 it was mentioned to be a Paleosaurus..

In 2002, even through it was believed that portions of the fossils were a juvenile Sellosaurus, it was identified as a new species (Efraasia).

THECODONTOSAURUS

The Thecodontosaurus

The Thecodontosaurus meaned socket toothed lizard. Fossils for this Triassic dinosaur were found in South England and Wales. The first fossils of the Thecodontosaurus was destroyed by bombings from Germany in WWII in 1940. More skeleton fossils had been found what was thought in Australia, but probably from England instead.

The Original classification of Thecodontosaurus was a Prosauropoda which was in 1998. but shortly after it was realized that this dinosaur should've been under the Sauropod classification because this dinosaur existed during the timeline where a prosauropod classification was created. Thecodontosaurus just was a little too primitive to fit under the Prosauropoda category.

The Thecodontosaurus was about 1.3 meters long, with a short neck, large skull, large eyes, and leaf shaped teeth. This herbivores hands and feet each had five digits, the hands were long and rather narrow with an extended claw on each. The front limbs were also much shorter than the legs, and the tail was much longer than the head, neck and body put together.

There has also been a major claim that this dinosaur is actually an already described different dinosaur called Pantydraco.

EONATATOR

The Eonatator

Eonatator is the genus from the subfamily Halisaurine. It is found that the Eonatator lived in the upper cretaceous of Europe and North America . It is the taxon that was generally includes within Halisaurus, but it is placed in its own genus. The name Eonatator in Greek means “dawn swimmer”. This genus is believed to found in the Kristianstad Basin of southern Sweden . The only species found in this period is E.aternbergii. This species is named after the scientist Charles h. Sternberg and his son Levi, as they discovered this specimen in the Niobrara Chalk during the year 1918.

The classification of this Eonatator is as follows:

Eonatator is classified under the kingdom Animalia, under the phylum chordate, class sauropsida and order squamata. It is also classified under the family Mosasauridae and subfamily Halisaurinae and genus eonatator.

Similar to many mosasaurs this genus also has a complicated taxonomic history. The specimen found was nearly a complete skeleton and this was originally referred to the genus Clidastes by the scientists Wiman and then it was referred to Halisaurus by the scientist Russell. And this made that the taxonomic history as the Clidastes. Sternbergii became as the Halisaurus.sterbergii. And during the late 80s the paleontologists suggested that H. Sternbergii belongs to its own genus. Scientists Bardet has explained the ambiguous characters of Eonatator and according to them the lateral suture of Eonatator were ending in the ninth maxillary teeth.

It is evident from the research conducted that these animals have the long tail. That is the length of the tail of these animals is of around 40% of the length of the head and trunk. The caudal vertebra of these animals is greater in its length. That is the length of the caudal vertebra is greater than its width.

The Eonatator femur length is almost twice that of the distal width. That is the length of the femur is long. These dinosaurs were known to have had smooth triangular table extending posteriorly. These animals bear circular foramen of a medium size, and it is located twice from the frontal parietal suture. In Eonatator the foramen is surrounded anteriorly and posteriorly by two parallel ridges. According to the Researchers, Eonatator would have had rounded quadrate. The vertebral column of Eonatator has seven cervical vertebrae. Eonatator has twenty four dorsals. These animals are characterized by four pygals.

There are twenty eight median caudals in these animals. In Eonatator, there are at least forty one terminal caudals. The length of the humerus in the animals of the genus Eonatator is approximately 2.5 times that of the distal width. The research studies reveals that Eonatator is the sister group to the clade Halisaurus. It is represented as the most basal known mosasaur taxa. Among the small mosasaurs Eonatator was one. The length of the typical adult Eonatator is around 2.65 meters. Eonatator generally feeds primarily on the fish and smaller marine reptiles.

IGUANODON

The Iguanodon

The Iguanodon was one of the first dinosaurs to be discovered and also the first named dinosaur creatures ever. With this scientists didn't know what to think. Strange enough to them, most lizards are carnivores but this one had cow like teeth making it obviously a herbivore. Not only that but the teeth were almost identical to what today's iguana teeth look like so they decided Iguanodon seemed to fit the name for this dinosaur. Still they've never seen anything so big before. A full grown Iguanodon is 30 feet in length. The biggest land animal today is the African Bush Elephant which is 19.7 feet in length. That's got to be a little freaky to find out. Its no doubt they were talking like it was a monster or something like that. There were a handful of complete skeletons found by numerous people in areas of Northern Europe, England, North America, Russia, Mexico, etc . One of the most unique features of the Iguanodon had a big horny spike as thumbs. Chances are this was a defense mechanism from predators that the of the Early Cretaceous period like the Inventor. Some scientists argue thinking it could've been used for climbing but that's unlikely because of the size of the creature.