tanystropheid
protorosaur
phytosaurian
pterosauromorph
leanchoiliid
dinocaridid
dinosauriform
protorothyridid
pachypleurosaurid
aigialosaurid
Ichthyosauria
phosphatocopid
dolichosaurid
order Ichthyosauria
allokotosaur
ichthyosauromorph
ichthyosauriform
trematosauroid
aigialosaur
opisthodont
drepanosauromorph
eosauropterygian
arctostylopid
archosauriform
crocodilian
archaeopterodactyloid
nothosaurid
crocodilian reptile
proterochampsian
pythonomorph
capitosauroid
order Eurypterida
Eurypterida
dsungaripteroid
champsosaurid
dolichosaur
necrosaur
anomalocarid
family Pterodactylidae
Stenopterygius quadrisicissus
choristodere
trematosaur
Pterodactylus
trilophosaurid
genus Pterodactylus
Pterodactylidae
stenopterygius
choristoderan
batrachosauroidid
deinonychosaur