genus Stenopterygius
ichthyosauriform
Stenopterygius quadrisicissus
stenopterygius
ichthyosauromorph
ichthyosaurian
genus Ichthyosaurus
neoichthyosaurian
stenopterygiid
arthropterygium
ichthyosaurus
ichthyosaurid
parvipelvian
mixosaurid
neoichthyosaur
Pterodactylus
phytosaurian
genus Pterodactylus
ichnomorphology
hymenochirin
ichthyornithid
ophthalmosaurid
order Ichthyosauria
aromobatid
protorothyridid
Ichthyosauria
thunnosaur
arachnomorph
nyctibatrachid
aphanosaur
opisthodont
genus Deinocheirus
shastasaurid
temnodontosaurid
nothosaurid
protorosaur
kuehneosaur
hyloid
hupehsuchian
aistopod
ichneumonidan
ichthyostegid
ichthyodectid
phosphatocopid
allokotosaur
Pallas's gull
crocodilian reptile
crocodilian
pterosauromorph
dolichosaur