Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Order Squaliformes Compagno, 1973 - dogfish sharks Family Dalatiidae Gray, 1851 - kitefin sharks Genus Somniosus Lesueur, 1818 Somniosus microcephalus (Bloch & Schneider, 1801) - Greenland shark