urodele
caudate
salamander
amphibia
Lanthanotidae
family Lanthanotidae
amphisbaenoid
herpetology
Labyrinthodontia
superorder Labyrinthodontia
paleoherpetology
superorder Labyrinthodonta
Labyrinthodonta
batrachology
genus Holbrookia
Holbrookia
reptilology
herptile
reptile
herp
reptology
Chlamydosaurus
genus Chlamydosaurus
Lacertilia
Sauria
suborder Lacertilia
suborder Sauria
amphibian genus
lizardlike
lizardly
monstersaurid
crocodilian reptile
crocodilian
genus Phrynosoma
reptile family
Phrynosoma
Squamata
order Squamata
subclass Lepidosauria
anurofauna
Lepidosauria
saurology
genus Callisaurus
worm lizard
polliwog
tadpole
Callisaurus
chamaeleontid
herpetofauna
pollywog