Malacopterygii n. pl. : An order of fishes in which the fin rays, except the anterior ray of the pectoral and dorsal fins, are closely jointed, and not spiny. It includes the carp, pike, salmon, shad, etc. Called also Malacopteri.

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Taxonomy
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Defination from the web:
Malacopterygii ( ¦maləkōtə¦rijē′ī ) ( vertebrate zoology ) An equivalent name for Clupeiformes in older ... malacopterygii. Post a question - any question - to the WikiAnswers community: Copyrights: Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. ...