Nautilida

Nautilida Temporal range: Devonian–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Nautilus pompilius
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Nautilida Agassiz, 1847
Type species
N. pompilius Linnaeus, 1758
Superfamilies
†Aipoceratoidea †Clydonautiloidea †Tainoceratoidea †Trigonoceratoidea Nautilaceae

The Nautilida constitute a large and diverse order of generally coiled nautiloid cephalopods that began in the mid Paleozoic and continues to the present with a single family, the Nautilidae which includes two genera, Nautilus and Allonautilus, with six species. All told, between 22 and 34 families and 165 to 184 genera have been recognised, making this the largest order of the subclass Nautiloidea.