Nautilidae

The Nautilidae, named by de Blainville 1825, is a family within the  Nautilaceae generally with smooth involute to slightly evolute shells with a compressed to depressed whorl section and straight to sinuous sutures.

The Nautilidae has is origin in the Triassic Syringonautilidae, a family within the Trigonocerataceae

Genera in stratigraphic order, starting with the most ancient, include:

Cenoceras   U Trias - M Jura

Eutrephoceras  U Jura - Miocene

Strionautilus  L Cret

Pseudoceneceras   Cret

Obinautilus   Oligocene

Nautilus    U Eocene - Rec.