Ichthyodea
plural noun
Ich·thy·o·dea
Definition of Ichthyodea
in some former classifications
: a suborder of Amphibia comprising forms having the gills or gill clefts usually persistent (as the siren, the congo snake, and members of the genera Proteus and Necturus) — compare mutabilia
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Merriam-Webster unabridged
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