Sauropodomorpha ΓÇ£lizard-footΓÇ¥ was a suborder of the order Saurischia ΓÇ£lizard-hippedΓÇ¥. Dinosaurs belonging to the sub-order Sauropodomorpha are often characterized by their titanic size and long necks. Like their modern day counterpart the giraffe, many Sauropods probably made use of their highly specialized neck in tree-top forage.
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The Ceratopsians were for the most part a large group of tough, casque-bodied herbivores who thrived during the Late Cretaceous. They were all equipped with thick frilled skulls, may of which sprouted a frightening collection of horns and spikes. The purpose of the horns was to discourage, wound, or even kill marauding predators. The frill, however, was a different story. Its original purpose was to stretch the jaw muscles of early Ceratopsians allowing them to feed on tougher vegitation. Later the frill developed into an effective defensive shield.
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The Coelurosaurs were a group of dinosaurs composed of small, fleet-footed insectivores, scavengers and predators. Many of these saurians like the Deinonychus were probably just as much at home scrounging eggs as they were chasing down larger dinosaurs. Some of the Coelurosaurs, like the Deinonychus had sickle-like hind toes possibly used to rend the flesh of their prey.
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The Stegosaurs were probably among the best armored saurians to ever walk the earth. Armed and armored with a staggering display of tail and/or longitudial spines set in thick, knobby hide, the Stegosaurs presented a target formidable enought to discourage roving Carnosaurs. The strange, bony plates that were once embeded in the hides of Kentrosaurus and Stegosaurus are thought to be either cooling devices or part of their vast defensive array.
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Though the Pterosaurs were not dinosaurs, they were close relatives and showed the variability and in-group specialization that were the hallmarks of their saurian cousins. Pterosaurs could have been found in almost any type of Jurassic to Cretaceous environment from sea to forest. They ate everything from fish to insects to carrion. Their flting abilities were weak at best, but because of ample wingspans, many were evidently quite proficient at gliding.
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Icthyosaurs were a highly specialized and highly successful form of dolphin-like marine reptile that first appeared some 200 million years ago during the Middle Triassic. Characterized by diminished hind legs, streamlined bodies, and ΓÇ£needles nosesΓÇ¥ filled with small, sharp teeth, the Icthyosaurs may have occupied a niche similar to that of the small, toothed whales of today.
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The Plesiosaurs, though only distantly related to the dinosaurs, represent an equally intriguing realm of development. Widespread in distribution and diverse in size and shape, the Plesiosaurs competed with other marine reptiles (like the Mosasaurs and the Icthyosaurs) for food. Most Plesiosaurs were equipped with rows of long sharp teeth which assured a strong grip on their prey (which was usually fish).
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The Hadrosaurs (or Duckbilled Dinosaurs) were a group of saurian herbivores that thrived in great numbers on the North American continent. Since the discovery of mass numbers of Hadrosaurs of all sizes and ages who died in extremely close proximity of each other, it has been suggested that they might have had a herd behavior similar to that of modern day antelopes.
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Each picture is a catagory of dinosaur. Click on them to bring up information about that class of creature.
Hold the Option key down to find the first dinosaur of that type's card.
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The Carnosaurs were the most fearsome dinosaurs that ever lived. They are characterized by their sharp teeth and talons. Besides the large Allosaurus and Tyranosaurus, there were many smaller carnivorous dinosaurs that raided any nests they could find. Many carnosaurs also had horns on their snouts for goring and intimidation.
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