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Temporal range: Early Oligocene to present
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Squaliformes
Family: Somniosidae
Genus: Somniosus
Lesueur, 1818

Somniosus is a widely distributed genus of deepwater dogfish sharks in the family Somniosidae.[2] Several members of the genus are believed to attain lengths up to 7 m (23 ft), thus rank among the largest of sharks.


See also[edit]


  1. ^ Bruce J. Welton; James L. Goedert (2016). "New fossil species of Somniosus and Rhinoscymnus (Squaliformes: Somniosidae), deep water sharks from Oligocene rocks of Western Washington State, USA". New Mexico Museum of Natural History and Science Bulletin. 74: 309–326.
  2. ^ Yano, K.; Stevens, J. D.; Compagno, L. J. V. (December 2004). "A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae)". Ichthyological Research. Springer. 51 (4): 360–373. doi:10.1007/s10228-004-0244-4.