Earth_4 - Eurypods Ornithopods Ceratopsians...

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Superbowl of Tetrapod Evolution Dinosaurs vs. Mammals Who’s your favorite?
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Tetrapod Family Tree
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Dinosauria – Terrible Lizards Sir Richard Owen  1804-1892 "The combination of such characters, some, as the  sacral bones, altogether peculiar among reptiles,  others borrowed, as it were, from groups now  distinct from each other, and all manifested by  creatures far surpassing in size the largest of  existing reptiles, will, it is presumed, be deemed  sufficient ground for establishing a distinct tribe or  suborder of Saurian Reptiles, for which I would  propose the name of Dinosauria."
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Hips, Ankles, Hands and Head
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Herrerasaurus
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Triassic
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Theropods
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Sauropods
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Unformatted text preview: Eurypods Ornithopods Ceratopsians Pachycephalosaurids Dinosaur Physiology Hot or cold blooded? 1. Stance - upright vs sprawling 2. Behavior - parental care, herding, migration 3. Brain size 4. Bone histology - haversian canals, rapid growth 5. Predator/Prey ratios Birds Dinosaurs with feathers Why Wings? From the trees down? From the ground up? Birds are Dinosaurs ? Live birth – except Platypus and Echidna Warm Blooded What is a Mammal ? Fossil Evidence Differentiated teeth Dentary – Squamosal jaw joint Synapsid Skull Mammal-like Reptiles Pelycosaurs Therapsids Reptile-Mammal Transition Eozostrodon - Morganucodon Quo Vadis?...
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