Squaliformes

Squaliformes is an order of sharks representing 7 families and 113 species of shark, with the spiny dogfish (Squalus acanthias) possibly the most abundant fish of any kind in the world's oceans. They are characterized by a lack of an anal fin, and range in size from 7.5 inches (Dwarf lanternshark, Etmopterus perryi) to 21 feet (Greenland shark, Somniosus microcephalus).

Squaliformes
Scientific classification
Kingdom Information
Domain	Eukaryota
Kingdom	Animalia
Subkingdom	Biliteria
Branch	Deuterostomia
Phylum Information
Phylum	Chordata
Sub-phylum	Vertebrata
Infraphylum	Gnathostomata
Class Information
Class	Chondrichthyes
Sub-class	Elasmobranchii
Order Information
Superorder	Selachimorpha
Order	Squaliformes
Family Information
Families	Echinorhinidae Squalidae Oxynotidae Centrophoridae Etmopteridae Somniosidae Dalatiidae
Population statistics