Osteichthyes

plural noun

Os·​te·​ich·​thy·​es

ˌästēˈikthēˌēz

in some classifications

: a class or other category of fishes including the lungfishes, crossopterygians, teleosts, and especially formerly the arthrodires and ostracoderms and distinguished from other forms resembling fish by the presence of true bone in their skeleton compare chondrichthyes

Word History

Etymology

New Latin, from oste- + Greek ichthyes, plural of ichthys fish

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