Origin of Dinosaurs
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| No holes in skull: turtles, amphibians, and fish | Anapsid
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| Only lower opening in skull: mammals and their relatives | Synapsid
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| Two holes in skull: most reptiles, dinosaurs, pterosaurs, and birds | diapsids
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| When period did insects appear? | Triassic
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| A synonym for a four-legged creature | tetrapod
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| What living forms evolved by the end of the Triassic? | Frogs, salamanders, turtles, lizards, snakes, crocodiles, mammals, and DINOSAURS
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| With all of these evolutions, what was the Triassic witnessing? | "Dawn of Modern Ecosystems"
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| Important group of large herbivores during the Triassic period. They were slow-moving, bulky, and closely related to mammals. | dicynodonts
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| What is the group that all dinosaurs belong to? | Archosauria, meaning 'ruling reptile'
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| What living forms are current today that belong in the archosaur group? | crocs, alligators, and birds
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| In archosaurs, what group includes crocodylians, including herbivores and carnivores, as well as aquatic and land-living forms. | Crurotarsi
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| name three crocodylian ancestors. | aetosaurs, postosuches, and terrestrisuchus
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| In archosaurs, what other group includes birds, dinosaurs, and pterosaurs? | ornithodira
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| One of the richest deposit of Dinosaur fossils during the Late Triassic and where is it? | Ischigualasto Formation, Argentina
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| What are some theropods produced by the Ischigualasto Formation? | Eoraptor, Herrerasaurus, Eodromaeus (No larger than a dog)
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| Sauropodomorph in this formation? | Panphagia
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| Herbivore in the formation? | Pisanosaurus
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| What are some characteristics of the first dinosaurs? | upright posture, open hip socket, opposable thumb, and a three-fingered hand
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| When a species has an edge over another | Competition
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| What gave dinosaurs the edge over other animals living in the Late Triassic? | Upright posture, bipedalism (2-legged), speed, intelligence, and maybe warm blood
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Created by:
Chelseagirl2508
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