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Middle Eocene to Present | image = Lemonshark (2).jpg | image_width = 240px | image_caption = Lemon shark (''N. brevirostris'') | image2 = Negaprion acutidens sydney2.jpg | image2_width = 240px | image2_caption = Sicklefin lemon shark (''N. acutidens'') | regnum = Animalia | phylum = Chordata | classis = Chondrichthyes | subclassis = Elasmobranchii | superordo = Selachimorpha | ordo = Carcharhiniformes | familia = Carcharhinidae | genus = ''Negaprion'' | genus_authority = Whitley, 1940 | type_species = ''Aprionodon acutidens queenslandicus'' | type_species_authority = Whitley, 1939 | synonyms = *''Hemigaleops'' Schultz and Welander in Schultz, L.P., E.S. Herald, E.A. Lachner, A.D. Welander, et al., 1953 *''Mystidens'' Whitley, 1944 }} ''Negaprion'' is a genus of requiem sharks in the family Carcharhinidae, containing the two extant species of lemon sharks: the lemon shark (''N. brevirostris'') of the Americas, and the sicklefin lemon shark (''N. acutidens'') of the Indo-Pacific. Both species are large, slow-moving, bulky sharks inhabiting shallow coastal waters, and can be identified by their short, blunt snouts, two dorsal fins of nearly equal size, and uniform yellowish brown or gray coloration. ==Species== * ''Negaprion acutidens'' (Rüppell, 1837) (Sicklefin lemon shark) * ''Negaprion brevirostris'' (Poey, 1868) (Lemon shark) * †''Negaprion eurybathrodon'' (Blake, 1862) † = extinct 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Negaprion」の詳細全文を読む スポンサード リンク
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