ctenochasmatid
varanopid
chelid
tetrapod
tetrarogid
podocnemid
Eastwood's whip lizard
tetradonematid
capercaillie
centropagid
temnodontosaurid
pterodactyl
tetragnathid
tetraodon
western capercaillie
benthosuchid
tetrabranchiate
porcellanid
kutorginid
ozobranchid
dortokid
anocleithrum
harpacticoid
asana
waspfish
diastylid
prototetrapod
limnocytherid
teguline
leaf turtle
pelomedusid
long-jawed spider
eucryptodiran
calyptraeid
dimorphodontid
testudinoid
lysorophian
potato chip of the sea
trionychian
splanchnotrophid
lamp shell
tritheledontid
iguanodontian
eupleurodiran
pterotracheid
Pterocles
ctenochasmatoid
trionychid
alligator snapping turtle