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Ambient Temperature (°C)

Body Temperature (°C). Ambient Temperature (°C). POSTURE VS. METABOLISM. Upright. Sprawling. Coelurosauria. Relative Brain Size. Carnosauria. Ornithopoda. Living Lizard. Ceratopsia. Stegosauria. Ankylosauria. Sauropoda. BRAIN SIZE RELATIVE TO LIVING LIZARD. Rapid Growth.

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Ambient Temperature (°C)

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  1. Body Temperature (°C) Ambient Temperature (°C)

  2. POSTURE VS. METABOLISM Upright Sprawling

  3. Coelurosauria Relative Brain Size Carnosauria Ornithopoda Living Lizard Ceratopsia Stegosauria Ankylosauria Sauropoda BRAIN SIZE RELATIVE TO LIVING LIZARD

  4. Rapid Growth Rapid Growth with Periods of Growth Cessation Slow Growth Fibro-lamellar bone with 2 growth stages (top) = cancellous bone; (bottom) = primary osteons Zonal bone with primary osteons between lamellated zones - growth rings Zonal bone formed form lamellated tissue with resting lines defining zones

  5. Living Endotherm Dinosaur Bone Microstructure Living Ectotherm

  6. Bones From Modern Reptiles Fibro-lamellar structure with four weakly defined zones Young American Alligator Enlargement of A showing non-lamellated character Young American Alligator Vascular bone without “growth rings” 1/2 Grown Galapagos Tortoise

  7. Bone with Zonal Growth Rings Femur of Ornithopod Rhabdodon Thinning of rings towards top implies progressive slowing of growth. Similar to modern crocodiles but growth rate (thickness) is faster than any known crocodile Zonal Bone - Pubis of Sauropod Typical of Reptilian Zonal Bone Bone with Zonal “Growth Rings” Rib of Allosaur-sized Carnosaur

  8. Blood Pressure Mm Mercury Living Endotherms vs. Ectotherms Amphibians Reptiles Birds Mammals

  9. meters Heart-Brain Vertical Distance Mm Mercury Ornithopods Theropods Sauropods Ceratopsians Dinosaur Blood Pressure

  10. 4 - Chambered 2 Chambered Imperfect 4 -Chambered Aerated Nonaerated Lizard Crocodile Mammal Endotherm vs. Ectotherm Hearts

  11. Crocodiles Turtles Snakes Lizards Dinosaurs Key Birds and Mammals Latitudinal Range

  12. Lion 1 year supply lion chow Crocodile 1 year supply crocodile chow Warm-Blooded Dinosaurs?

  13. Predator:Prey Ratios = Plant eaters = Meat eaters

  14. The Water Recovery Mechanism of Respiratory Turbinates

  15. Hypacrosaurus (Hadrosaur) Ornithomimus (Theropod) Relation of Nasal Passage Cross-sectional Area to Body Mass

  16. A. Crocodile B. Ostrich C. Big-horn Sheep D. Nanotyrannus E. Ornithomimus F. Hypacrosaurus Lambeosaur Axial Tomography of Nasal Passages

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