Title: diaspid phylogeny
1diaspid phylogeny
tuatara
lizards
snakes
archosaurs
lepidosaurs
diapsid ancestor
2diaspid phylogeny
3Crocodylia alligators, crocodiles, gavials
23 extant species
4get the field guide
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6most derived of the extant reptiles four
chambered heart lungs (faveoli) diaphragm thecodon
t teeth well-developed cerebral cortex
7external nostrils hard palate internal
nostrils nasopharynx fleshy folds
8Archosaurs
- large
- aquatic or semi-terrestrial
- predaceous
9sit and wait predators
10this is a true story
11males are territorial displays courtship
12females make nest clears a circular
area vegetation and mud central vegetation
13pit eggs nest covered conical structure female
stays nearby
14nest function? female returns females defend
15babies hatch vocalize female parental care
16diaspid phylogeny
crocodilians
pterosaurs
tuatara
lizards
snakes
archosaurs
lepidosaurs
diapsid ancestor
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18Pteranodon
Quetzalcoatlus
19Quetzalcoatlus
20diaspid phylogeny
crocodilians
upright posture bipedal locomotion large body size
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
21diaspid phylogeny
crocodilians
saurischians
ornithischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
22The Ornithischians
Stegosaurus
23Hadrosaurs, the duckbilled dinosaurs
24Ceratopsians, including Protoceratops
25and Triceratops
26diaspid phylogeny
crocodilians
saurischians
ornithischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
27crocodilians
sauropods
ornithischians
saurischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
28Diplodocus
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30Apatosaurus
Gigantothermy
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32carnosaurs
crocodilians
sauropods
ornithischians
theropods
saurischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
33Allosaurus
34Tyrannosaurus
35dromaeosaurs
carnosaurs
crocodilians
sauropods
ornithischians
theropods
saurischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor
36Utahraptor
37Deinonychus
38Velociraptor
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43Birds!
dromaeosaurs
carnosaurs
crocodilians
sauropods
ornithischians
theropods
saurischians
pterosaurs
tuatara
lizards
snakes
dinosaurs
archosaurs
lepidosaurs
diapsid ancestor