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diaspid phylogeny

diaspid phylogeny. tuatara. lizards. snakes. archosaurs. lepidosaurs. diapsid ancestor. crocodilians. tuatara. lizards. snakes. archosaurs. lepidosaurs. diapsid ancestor. diaspid phylogeny. Crocodylia: alligators, crocodiles, gavials. 23 extant species. get the field guide.

JasminFlorian
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diaspid phylogeny

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  1. diaspid phylogeny tuatara lizards snakes archosaurs lepidosaurs diapsid ancestor

  2. crocodilians tuatara lizards snakes archosaurs lepidosaurs diapsid ancestor diaspid phylogeny

  3. Crocodylia: alligators, crocodiles, gavials 23 extant species

  4. get the field guide

  5. most derived of the extant “reptiles” four chambered heart lungs (faveoli) diaphragm thecodont teeth well-developed cerebral cortex

  6. external nostrils… hard palate internal nostrils… “nasopharynx” fleshy folds…

  7. Archosaurs large aquatic or semi-terrestrial predaceous

  8. “sit and wait” predators

  9. this is a true story…

  10. males are territorial displays… courtship…

  11. females make nest clears a circular area vegetation and mud central vegetation…

  12. pit… eggs nest covered… conical structure female stays nearby…

  13. nest function? female returns females defend…

  14. babies hatch vocalize female… parental care…

  15. diaspid phylogeny crocodilians pterosaurs tuatara lizards snakes archosaurs lepidosaurs diapsid ancestor

  16. Pteranodon Quetzalcoatlus

  17. Quetzalcoatlus

  18. diaspid phylogeny crocodilians upright posture bipedal locomotion large body size pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  19. diaspid phylogeny crocodilians saurischians ornithischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  20. The Ornithischians… Stegosaurus

  21. Hadrosaurs, the “duckbilled” dinosaurs

  22. Ceratopsians, including Protoceratops

  23. and Triceratops

  24. diaspid phylogeny crocodilians saurischians ornithischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  25. crocodilians sauropods ornithischians saurischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  26. Diplodocus

  27. Apatosaurus Gigantothermy…

  28. large SA BV SA/BV small large linear dimension of the body small

  29. carnosaurs crocodilians sauropods ornithischians theropods saurischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  30. Allosaurus

  31. Tyrannosaurus

  32. dromaeosaurs carnosaurs crocodilians sauropods ornithischians theropods saurischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

  33. Utahraptor

  34. Deinonychus

  35. Velociraptor

  36. Birds! dromaeosaurs carnosaurs crocodilians sauropods ornithischians theropods saurischians pterosaurs tuatara lizards snakes dinosaurs archosaurs lepidosaurs diapsid ancestor

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