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Webster 1913 Edition
Labyrinthodon
Labˊy-rin′tho-don
,Noun.
[Gr.
λαβύριντηοσ
labyrinth + ὀδούς
, ὀδόντος
, tooth.] (Paleon.)
A genus of very large fossil amphibians, of the Triassic period, having bony plates on the under side of the body. It is the type of the order
Labyrinthodonta
. Called also Mastodonsaurus
.