stenopterygiid
stenopterygius
Stenopterygius quadrisicissus
thunnosaur
arthropterygium
genus Ichthyosaurus
parvipelvian
leptonectid
thunnosaurian
genus Stenopterygius
temnodontosaurid
neoichthyosaurian
ophthalmosaurid
neoichthyosaur
ichthyornithid
shastasaurid
ichthyosaurus
stegocephalid
ichthyosaurian
ichthyosaurid
palaeosetid
nyctosaurid
mixosaurid
ophthalmosaur
Steatornis
genus Steatornis
chaoyangopterid
leanchoiliid
palaeoryctid
ichthyopterygian
archaeopterodactyloid
ichnomorphology
dsungaripterid
palaeozygopleurid
neopseustid
sternophorid
dimorphodontid
baracromian
ichthyostegid
stilipedid
stenothecoid
ornithocheirid
phreatogammarid
order Ichthyosauria
ichthyodectid
ichthyophiid
Ichthyosauria
dinocaridid
spring quillwort
phronimid