Palæont. [mod.L. (R. Owen), f. Gr. λαβύρινθος LABYRINTH + ὀδοντ-, ὀδούς tooth: cf. note s.v. GLYPTODON.] Any of the large fossil amphibians of the genus Labyrinthodon, characterized by teeth of labyrinthine structure having the enamel folded and sunk inward.
1847. Ansted, Anc. World, vii. 132. The numerous and gigantic labyrinthodons … as large as a rhinoceros.
1854. R. Owen, in Circ. Sci. (c. 1865), II. 97/2. The extinct gigantic lizard-like toad, called Labyrinthodon.
1876. Page, Adv. Text-bk. Geol., xvi. 294. The batrachian or frog-like labyrinthodon.
