Asymptoceras

Asymptoceras Temporal range: Mississippian
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Nautilida
Superfamily:	Aipocerataceae
Family:	Aipoceratidae
Genus:	Asymptoceras , 1852
Species
A. newtoni Hyatt A. pyxis Shimanskiy, 1967 A. tschernovi Shimanskiy, 1990

Asymptoceras is a genus of aipoceratids (Nautiloidea) similar to Aipoceras but tightly coiled and with only part of the body chamber divergent from the previous whorl. Shell evolute, expanding fairly rapidly; umbilicus open, perforate; whorl section ovoid to subquadrate.

Asymptoceras is known from Mississippian (Lower Carboniferous) sediments in Europe and North America.

References[]

This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. (March 2015) (Learn how and when to remove this template message)

• Bernard Kummel, 1964. Nautiloidea - Nautilida; Treatise on Invertebrate Paleontology, Part K. Geological Society of America.
• Asymptoceras in Fossilworks

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