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''Isurus'' is a genus of mackerel sharks in the family Lamnidae, commonly known as the mako sharks. The two living species are the common shortfin mako shark (''I. oxyrinchus'') and the rare longfin mako shark (''I. paucus''). They range in length from , and have an approximate maximum weight of . Several extinct species are known from fossils found in sediments from Cretaceous to Quaternary (age range: 99.7 to 0.781 million years ago).〔(Fossilworks )〕 The family Lamnidae also includes the great white shark and the porbeagle. Mako sharks are capable of swimming at speeds of up to , and jumping up to into the air. The great white is also closely related to an ancient mako shark, ''Isurus hastalis''. ==Species== The genus contains these species:〔 * ''Isurus oxyrinchus'' (Rafinesque, 1810) (shortfin mako)〔Smith, J.L.B. (Sharks of the Genus Isurus Rafinesque, 1810 ). Ichthyological Bulletin; No. 6. Department of Ichthyology, Rhodes University, Grahamstown, South Africa〕 * ''Isurus paucus'' (Guitart-Manday, 1966) (longfin mako)〔Tony Ayling & Geoffrey Cox, ''Collins Guide to the Sea Fishes of New Zealand'', William Collins Publishers Ltd, Auckland, New Zealand 1982 ISBN 0-00-216987-8〕 *†''Isurus desori'' (Agassiz, 1843) *†''Isurus escheri'' Agassiz 1843 *†''Isurus flandricus'' (Leriche, 1910) *†''Isurus hastalis'' Agassiz, 1843〔(Isurus hastalis on Fossilworks )〕 *†''Isurus minutus'' (Agassiz, 1843) *†''Isurus nakaminatoensis'' (Saito, 1961) *†''Isurus oxyrhinchus'' Rafinesque 1810 *†''Isurus planus'' (Agassiz, 1856) *†''Isurus praecursor'' (Leriche, 1905) *†''Isurus rameshi'' (Mehrotra, Mishra & Srivastava, 1973) *†''Isurus spallanzani'' Rafinesque 1810 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「Isurus」の詳細全文を読む スポンサード リンク
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