Aethoceras

Aethoceras Temporal range: late Early Ordovician
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Tarphycerida
Family:	Estonioceratidae
Genus:	Aethoceras Teichert & Glenister, 1954

Aethoceras is a genus of Tarphycerida nautiloids included in the family Estonioceratidae for which the shell is a loosely coiled, gradually expanding dextral torticone with a slightly depressed whorl section. Siphuncle small, ventral, submarginal. Whorl section somewhat resembles early stages of Estonioceras in being laterally fanged. Trochoidal coiling brings to mind the later Trocholitidae. Aethoceras was originally found in the lower Ordovician of Western Australia.

References

• Furnish & Glennster, 1964, Nautiloidea - Tarphycerida. Treatise on Invertetrate Paleontology, Part C. University of Kansas Press, Lawrence, Ka.
• Aethoceras in Fossilworks. 1/5/15