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