Triturus vulgaris
plesiadapoid
pliosaurian
pliosaurid
Batrachoseps
genus Batrachoseps
common newt
superorder Labyrinthodonta
Labyrinthodontia
Labyrinthodonta
superorder Labyrinthodontia
dusky salamander
ambystomatid
Desmograthus
genus Desmograthus
Plesiosauria
salamanderlike
suborder Plesiosauria
ambystomid
genus Plesiosaurus
bolitoglossine
actinolepid
siren
champsosaur
genus Salamandra
pliosauroid
Salamandra
placodont
salamandrous
platyceratid
pleurosaur
plesiopid
phliantid
mother-of-pearl
ambystomid salamander
salamandrid
collembola
paramelitid
newt
mudpuppy
pleurocerid
plecopteran
triton
Ambystoma mexicanum
platystictid
pleurodeline