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Lamnidae : ウィキペディア英語版
Lamnidae

Lamnidae is a family of sharks, commonly known as mackerel sharks or white sharks. They are large, fast-swimming sharks, found in oceans worldwide. The name of the family is formed from the Greek word, ''lamna'', which means fish of prey, and was derived from the Greek legendary creature, the Lamia.〔ISBN 9781258302863: ''A source-book of biological names and terms'', 1944, Edmund Carroll Jaeger〕
These sharks have pointed snouts, spindle-shaped bodies, and large gill openings. The first dorsal fin is large, high, stiff and angular or somewhat rounded. The second dorsal and anal fins are minute. The caudal peduncle has a couple or less distinct keels. The teeth are gigantic. The fifth gill opening is in front of the pectoral fin and spiracles are sometimes absent. They are heavily built sharks, sometimes weighing nearly twice as much as sharks of comparable length from other families. Many sharks in the family are among the fastest-swimming fish, although the massive ''Carcharodon'' is slower due to its great size.
==Genera and species==
The family contains five living species in three genera and the following selected extinct genera and species:
* Genus ''† Carchariolamna'' Hora, 1939
*
*†''Carchariolamna heroni'' Hora, 1939
* Genus ''Carcharodon'' Smith, 1838
*
* ''Carcharodon carcharias'' (Linnaeus, 1758) (great white shark)
*
*†''Carcharodon megalodon'' Agassiz, 1843 (megatooth shark) (disputed, might be from the family ''Otodontidae'')
*
*†''Carcharodon caifassii'' Lawley, 1876
*
*†''Carcharodon hubbelli'' Ehret, Macfadden, Jones, Devries, Foster & Salas-Gismondi, 2012
* Genus †''Corax'' Agassiz 1843
* Genus ''† Cosmopolitodus'' Glikman, 1964
*
*†''Cosmopolitodus escheri'' Agassiz, 1843
*
*†''Cosmopolitodus hastalis'' Agassiz, 1843 (broad-toothed mako)
* Genus ''Isurus'' Rafinesque, 1810
*
* ''Isurus oxyrinchus'' Rafinesque, 1810 (shortfin mako)
*
* ''Isurus paucus'' Guitart-Manday, 1966 (longfin mako)
*
*†''Isurus desori'' Agassiz, 1843
*
*†''Isurus flandricus'' Leriche, 1910
*
*†''Isurus minutus'' Agassiz, 1843
*
*†''Isurus nakaminatoensis'' Saito, 1961
*
*†''Isurus planus'' Agassiz, 1856
*
*†''Isurus praecursor'' Leriche, 1905
*
*†''Isurus rameshi'' Mehrotra, Mishra & Srivastava, 1973
* Genus ''† Isurolamna'' Cappetta, 1976
*
*†''Isurolamna affinis'' Casier, 1946
*
*†''Isurolamna bajarunasi'' Glikman & Zhelezko, 1985
*
*†''Isurolamna gracilis'' Le Hon, 1871
*
*†''Isurolamna inflata'' Leriche, 1905
* Genus ''† Karaisurus'' Kozlov in Zhelezko & Kozlov, 1999
*
*†''Karaisurus demidkini'' Kozlov in Zhelezko & Kozlov, 1999
* Genus ''† Lamiostoma'' Glikman, 1964
*
*†''Lamiostoma belyaevi'' Glikman, 1964
*
*†''Lamiostoma stolarovi'' Glikman & Zhelezko in Zhelezko & Kozlov, 1999
* Genus ''Lamna'' Cuvier, 1816
*
* ''Lamna ditropis'' Hubbs & Follett, 1947 (salmon shark)
*
* ''Lamna nasus'' Bonnaterre, 1788 (porbeagle)
*
*†''Lamna attenuata'' Davis, 1888
*
*†''Lamna carinata'' Davis, 1888
*
*†''Lamna hectori'' Davis, 1888
*
*†''Lamna marginalis'' Davis, 1888
*
*†''Lamna quinquelateralis'' Cragin, 1894
*
*†''Lamna trigeri'' Coquand, 1860
*
*†''Lamna trigonata'' Agassiz, 1843
* Genus ''† Lethenia'' Leriche, 1910
*
*†''Lethenia vandenbroecki'' Winkler, 1880
* Genus ''† Macrorhizodus'' Glikman, 1964
*
*†''Macrorhizodus americanus'' Leriche, 1942
*
*†''Macrorhizodus nolfi'' Zhelezko, 1999
* Genus †''Parotodus'' Cappetta, 1980
*
*†''Parotodus benedenii'' Le Hon, 1871
*
*†''Parotodus mangyshlakensis'' Kozlov, 1999
*
*†''Parotodus pavlovi'' Menner, 1928

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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