Lamna

Lamna
Temporal range: 65–0 Ma Earliest Danian to Present
Porbeagle (L. nasus)
Salmon shark (L. ditropis)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Lamniformes
Family: Lamnidae
Genus: Lamna
Cuvier, 1816
Type species
Lamna nasus
Bonnaterre, 1788 porbeagle
Synonyms
  • Exoles Gistel, 1848
  • Lamia Risso, 1827
  • Selanonius Fleming, 1828

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.

Endothermy

The two species of this genus can keep their blood temperature higher above that of the water surrounding them than other cartilaginous fish, with temperature differences recorded up to 15.6 °C. Among fish, blood temperature regulation only occurs in large, fast species – bluefin tuna and swordfish are bony fish with similar abilities.

Species

  • Lamna attenuata (Davis, 1888)
  • Lamna carinata (Davis, 1888)
  • Lamna ditropis C. L. Hubbs & Follett, 1947 (salmon shark)
  • Lamna hectori (Davis, 1888)
  • Lamna marginalis (Davis, 1888)
  • Lamna nasus (Bonnaterre, 1788) (porbeagle)
  • Lamna quinquelateralis (Cragin, 1894)
  • Lamna trigeri (Coquand, 1860)
  • Lamna trigonata (Agassiz, 1843)

See also


This page was last updated at 2024-03-25 11:43 UTC. Update now. View original page.

All our content comes from Wikipedia and under the Creative Commons Attribution-ShareAlike License.


Top

If mathematical, chemical, physical and other formulas are not displayed correctly on this page, please useFirefox or Safari