plural noun

Definition of Osteolepidae 

: a widely distributed family of freshwater Paleozoic fishes (order Rhipidistia) having slender elongated bodies, large rhombic scales, and a well-ossified cranium and commonly considered to be on the direct ancestral line of the amphibians

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History and Etymology for Osteolepidae

New Latin, from Osteolepis, type genus + -idae

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exaggeratedly or childishly emotional

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