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Definition of: Selachii
(si·lā′kē·ī) noun plural
An order or subclass of elasmobranch fishes, including the sharks, skates, dogfishes, and rays, with their immediately related fossil allies. [<NL <Gk. selachos a shark]
—se·la′chi·an adjective & noun
—sel·a·choid (sel′ə·koid) adjective & noun
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