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|Noun||1.||superorder Labyrinthodontia - extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic|
animal order - the order of animals
amphibia, class Amphibia - the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians
labyrinthodont - an amphibian of the superorder Labyrinthodontia
order Stereospondyli, Stereospondyli - formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece; "most vertebrates are stereospondylous"