Ichthyosauria
order Ichthyosauria
Sauropterygia
order Sauropterygia
ichthyosauromorph
ichthyosauriform
order Pterosauria
Pterosauria
family Uintatheriidae
Uintatheriidae
neoichthyosaur
phosphatocopid
dinocaridid
Stenopterygius quadrisicissus
chroniosuchian
stenopterygius
leanchoiliid
pterosauromorph
macrobaenid
eusaurischian
palaeobatrachid
dinocarid
dortokid
parvipelvian
order Ictodosauria
Ictodosauria
arthropterygium
titanosaur
titanosaurian
dolichosaurid
dinosauriform
Ichthyosauridae
archosaurian
eosauropterygian
neornithischian
order Eurypterida
archosaur
protorosaur
archosaurian reptile
Eurypterida
family Ichthyosauridae
ichthyosaurian
acanthostegid
neoichthyosaurian
choristodere
lysorophian
archaeopterodactyloid
paleoherpetology
sandownid
aigialosaurid