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Life Before the Jurassic
by: Anthony G., Grade: 5


This whole dino thing started
out with a reptile known as
Hylonomus. Living in the middle Carboniforeus period
Hylonomus were widespread
since the land was all connected back then. They were two feet long and ate insects. We know about Hylonomus because we have found fossils inside trees.
Pretty weird huh. Hylonomus got in there when the tree was rotting and ate bugs that settled in the tree. The Hylonomus would become stuck in the trunks and become fossilized and that's just the beginniningof the dinosaurs. The next period was the Permian Period the time of mammal-like reptiles.
Probably the most famous of all mammal-like reptiles was Dimetrodon which many people mistake as a dinosaur. Other mammal-like reptiles are Edaphosaurus a relative of Dimetrodon,saber-toothed Lycaenops, and large, bulky
Moschops. Here are some facts about them. Edaphosaurus probably used its sailike back as a heat controller
Whenever Edaphosaurus got too cold or too hot it could control its body tempature with its sail. Lycaenops was a swift, small hunter it hunted in packs like wolves of today and could take down animals much larger then themselves. They lived in Africa during the Late Permian Period. Moschops was a huge herbivore and was at least fifteen feet long. It was hunted by Lycaenops.Finally after the Permian Period the Triassic Period began. The dawn of the dinosaurs. The first of the dinosaurs was Anchisaurus a
small dinosaur about seven feet long. From this small omnivore came many other dinosaurs. There were still mammal-like reptiles around at the time but they had gotten much smaller. Coelophysis was another early dinosaur. Some scientists think Coelophysis ate their babies when food was scarce but others thought that Coelophysis gave birth to live young.One of the larger
dinosaurs were Plateosaurus and Liliensternus. Plateosaurus was a large prosauropod that lived in Europe. Liliensternus was a carnivore that preyed on Plateosaurus and other dinosaurs. One of the first pterosaurs took to flight in the Triassic Period and it was known as Eudimorphodon.
That's all the information I have.



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