Definitions

from The Century Dictionary.

  • One of three primary groups or provinces of vertebrates in Huxley's classification (the other two being Sauropsida and Mammalia), comprising the amphibians or batrachians and the fish and fish-like vertebrates; the branchiate or anamniotic Vertebrata.

from the GNU version of the Collaborative International Dictionary of English.

  • noun plural (Zoöl.) A grand division of the Vertebrata, including the Amphibia and Fishes.

Etymologies

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Examples

  • It now appears that they form with the latter one great group -- the ichthyopsida of

    On the Genesis of Species St. George Mivart

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