Dalatiidae

Sleeper sharks
Greenland shark, Somniosus microcephalus
Scientific classification
Kingdom:	Animalia
Subkingdom:	Deuterostomia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Squaliformes
Family:	Dalatiidae Gray, 1851
Subfamilies
See text for subfamilies and genera.

Dalatiidae is a family of sharks, commonly known as sleeper sharks. They are found worldwide.

All members of the family except for the Pacific sleeper shark, Somniosus pacificus, have luminescent organs.

Subfamilies, Tribes, and Species

In some classifications this family includes the genera Centrophorus, Cirrhigaleus and Deania but this article follows FishBase in placing those genera in the families Centrophoridae (Centrophorus and Deania) and Squalidae (Cirrhigaleus).

In other classifications the subfamilies are raised to the level of the families Etmopteridae, Somniosidae and Oxynotidae.

• Subfamily Dalatiinae (Gray, 1851)
  • Genus Euprotomicroides
  • Genus Heteroscymnoides
  • Genus Mollisquama
  • Tribe Dalatiini
    • Genus Dalatias
    • Genus Isistius
  • Tribe Euprotomicrini
    • Genus Euprotomicrus
    • Genus Squaliolus
• Subfamily Etmopterinae Fowler, 1934
  • Genus Aculeola
  • Genus Centroscyllium
  • Genus Etmopterus
  • Genus Miroscyllium
  • Genus Trigonognathus
• Subfamily Oxynotinae Gill, 1872
  • Genus Oxynotus
• Subfamily Somniosinae Jordan, 1888
  • Genus Centroscymnus
  • Genus Scymnodalatias
  • Genus Scymnodon
  • Genus Somniosus

References

• Froese, Rainer, and Daniel Pauly, eds. (2006). "Dalatiidae" in FishBase. January 2006 version.