From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Temporal range: Upper Triassic–Present
Nautilus profile.jpg
Nautilus belauensis
Eutrephoceras dekayi - Coon Creek Tennessee.jpg
Eutrephoceras dekayi
Scientific classification edit
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Superfamily: Nautilaceae
de Blainville, 1825


The Nautilaceae form one of five superfamilies that make up the Nautilida according to Bernard Kummel (1964), and the only one that survived past the Triassic. The Nautilaceae comprise six families: Nautilidae, Paracenoceratidae, Pseudonautilidae, Cymatoceratidae, Hercoglossidae, and Aturiidae. Shimanskiy (1957) separated the Paracenoceratidae and Pseudonautilidae from his near equivalent Nautilina and added them to the Lyroceratina, expanding the equivalent Clydonautilaceae and bringing it into the Jurassic. The Nautilaceae are represented by Nautilus and Allonautilus, genera included in the Nautilidae.

Species in the Nautilaceae are generally smooth and involute with straight to strongly sinuous sutures and a small siphuncle. Some groups have sinuous plications or ribs

The Nautilaceae began in the Late Triassic with Cenoceras, a golublar to discoidal genus derived from the Syringonautilidae and possibly from Syringonautilus. Cenoceras, the earliest member of the Nautilaceae and Nautilidae, is the only nautiloid known to have crossed the upper Triassic boundary and the only one known from the Lower Jurassic

All six families of the Nautilaceae, except for the Aturiidae (Aturia), are derived from the Cenoceras complex in the Middle Jurassic or from Eutrephoceras which immediately followed. The Cenozoic Aturia seems sufficiently derived to warrant familial distinction from its source, the Hercoglossidae.


  • Kummel B. 1964. Nautiloidea-Nautilida; Treatise on Invertebrate Paleontology Part K, Teichert & Moore (eds) Geological Society of America and University of Kansas Press.
Retrieved from ""
This content was retrieved from Wikipedia :
This page is based on the copyrighted Wikipedia article "Nautilaceae"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA