| Term | Definition |
|---|
| Permian Domination | Synapsids |
| Tetrapod reduction | mass extinction |
| Mass extinction led to lots of open niches led to... | adaptive radiation of remaining taxa |
| adaptive radiation produced | first dinosaurs, crocodilians, pterosaurs, turtles, mammals, and lissamphibians |
| Continents of Triassic | Warmer, no ice caps, became drier towards the end, seed ferns to early conifers |
| Ichthyosaurs | basal group of transition to archosaurs, dolphin like, highly aquatic, more than 5 fingers, (Euryapsid, Polyphyletic) |
| Shonisaurus | Ichthyosaur, 50 ft. long, live bearing |
| Lepidosaurs | sister group to clade of marine reptiles |
| Placodont | reptillian manatee, shallow marine, Just Triassic |
| Placodus | Placodont, bulky, huge molars, Gastralia |
| Henodus | Placodont, dermal bone over back like a turtle |
| Pachypleurosaurs | Paddle Shaped feet, Long body, neck, and tail with small head and pointy teeth for eating fish, less than a meter long, fully aquatic, gastralia, shallow marine |
| Pachypleurosaurus | pachypleurosaur |
| Nothosaurs | Closely related to pachypleurosaurs and Pleiosaurs, 1-4 m. long, gastralia, Euryapsid (Polyphyletic) |
| Nothosaurus | Nothosaur |
| Plesiosaurs | closely related to Pachypleurosaurs and nothosaurs, mostly Jurassic and Cretaceous, Gastralia, Really Big, Marine |
| Elasmosaurus | Plesiosaur, long necked- 5 toes (paddle) |
| Kronosaurus | Plesiosaur, short necked- 5 toes (Paddle) |
| Archosauromorph | moving into archosaurs |
| Trilophosaurs | Lost lower temporal fenestra (euryapsid?) herbivores- big molars |
| Trilophosaurus | Trilophosaur |
| Rhynchosaurs | Abundant in Triassic, herbivore type molars, big digging claws and incisors-big pointy at front |
| Hyperodapedon | Rhynchosaur |
| Prolacertiforms | (First Lizard form) |
| Protosaurus | Prolacertiform, earliest archosaur in mid permian already long neck, neck much longer in later types |
| Tranystropheus | Prolacertiform, neck longer than body and tail, not flexible only 9-12 vertebrates, shallow marine fish eater, juveniles had short necks, probably couldn't survive unless aquatic |
| Archosauria | basal to Dinosaurs (Crurotarsi- croc like archosaurs), antorbital fenestra and lateral mandibular fenestra are common |
| antorbital fenestra | hole in front of eye |
| Lateral mandibular Fenestra | hole in lower jaw |
| Proterosuchide | carnivores, might be able to run on hind legs, looks like croc |
| proterosuchus | proterosuchide, 5 ft. long |
| erythrosuchids | carnivores, probably from russia |
| vjushkovia | erythrosuchids, 16 ft. long |
| Euparkeria | small carnivore, little and bipedal |
| crurotarsi | croc like archosaurs, unique ankle structure |
| Phytosaurs | late triassic, nostrils in front of eyes, quadrapedal |
| Parasuchus | Phytosaur |
| Stagonolepids | aetosaurs, Only crurotarsi that is a herbivore, body armor and upturned snout |
| Stagonolepis | Stagonolepid |
| Ornithosuchids | small carnivore, bipedal and quadrapedal |
| Ornithosuchus | ornithosuchid |
| Rauisuchids | top predators and big carnivores |
| Postosuchus | Rauisuchid, bi pedal and quadrapedal |
| Crocodylomorphs | ancestors to crocs even though they don't look like it, late triassic |
| Staltoposuchus | crocodylomorph, lightly built insectivore |
| Eushuchian | Deinosuchus |
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