Order Teuthida Naef 1916 (squid)
Parent taxon: Decabrachia according to P. Doyle et al. 1994
See also Nicholls and Isaak 1987, Sepkoski 2002 and Wells and Houston 2001
Sister taxa: Sepiida, Sepiolida, Spirulida
Subtaxa: Berryteuthis Dorateuthis Dosidicus Geopeltis Geoteuthinus Glochinomorphina Glyphiteuthis Jeletzkyteuthis Kelaeno Leptoteuthis Libanoteuthis Listroteuthis Loligo Maioteuthis Mastigophora Moroteuthis Necroteuthis Neololigosepia Parabelopeltis Paraplesioteuthis Parateudopsis Plesioteuthididae Plesioteuthis Prototeuthina Romaniteuthis Styloteuthis Symplectoteuthis Teudopsis Trachyteuthis Triadoteuthis
Ecology: fast-moving nektonic carnivore