from The Century Dictionary and Cyclopedia
- A suborder of the stegocephalous Amphibia having completely ossified vertebræ sometimes perforated for the passage of the notochord, and teeth highly complicated by infolding of the dentine as in the Labyrinthodontidæ, which see. See also Mastodon-saurus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. formerly a suborder of Stegocephalia; amphibia having vertebrae whose component elements are fused into a single piece
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