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Tetrapods, Thecodontia en primitiv Archosauria, some believed that…
Tetrapods
Lay egg in water
Amphibia
Inside sex organ
Amnioto
Synapsids
Reptiler
Anapsida
Diapsida
Lepidosauria
squamata
Ichyosauria
Plesiosaur
Archosaura
Crocodila
Ornithodira
upprätt position där benen är indragna under kroppen
Pterosauria
flyvande reptil
Dinosauria
Ornithischia
fågellikand bäcken
Saurischia
reptillikand bäcken
Theropoda
some belived that Herrerasaurus and Eoraptor should be a part of saurischia
Thecodontia
en primitiv Archosauria
Ornithischia
Saurischia
Pterosauria
Crocodylia
some believed that Herrerasaurus and Eoraptor was the dinosaurs ancestors