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The porbeagle or porbeagle shark (Lamna nasus) is a species of mackerel shark in the family Lamnidae, distributed widely in the cold and temperate marine waters of the North Atlantic and Southern Hemisphere. In the North Pacific, its ecological equivalent is the closely related salmon shark (L. ditropis). It typically reaches 2.5 m (8.2 ft) in ...
Lamna is a genus of mackerel sharks in the family Lamnidae, containing two extant species: the porbeagle (L. nasus) of the North Atlantic and Southern Hemisphere, and the salmon shark (L. ditropis) of the North Pacific.
Salmon sharks have a wide, double keeled tail (a second, short ridge that runs along the upper part of the lower lobe of the tail.) The only other shark with a double keeled tail is the porbeagle shark, which the salmon shark is closely related to. Salmon sharks are voracious group hunters.
Researchers have discovered evidence pointing to the first known case of a porbeagle shark — which can grow up to 12 feet long and 500 pounds — being killed by a large shark predator.
They include the great white, the mako, porbeagle shark, and salmon shark. Mackerel sharks have pointed snouts, spindle-shaped bodies, and gigantic 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 few or less distinct keels. The teeth ...
Porbeagle shark was eaten by a warm-blooded predator, team says. Sulikowski said the team put two different tags on their subject sharks. The first tag, called a finmount tag, is located on the ...
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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