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5 Cards in this Set
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Dinosaurs-(fearfully great reptile) coined by Owens Large terrestrial reptile with upright posture. -common trait of all--Cnemial Crest Earliest trait to evolve--because its the oldest |
Extinction 65mya Dinosaur entered 228mya |
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Pre flight adaptations: semolina carpel: move wrist to grab things feathers enlarged brain |
Post-Flight adaptations: larger feathers alvla perchfoot wishbone |
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Birds appear in middle dinosaur record |
5 principles to ordering strata 1.Superposition 2. Original Horizontally 3. Lateral continuity 4.Faunal succession 5. Cross cutting relationships |
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Mesozoic Era (age of reptiles) 250-65mya: Duration 185mya Includes: Triassic, Jurassic, Cretaceous, origin of all major Tetrapod groups |
Heroic Period Marsh and Cope |
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Dental battery: many teeth acting as one supertooh. |
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