Asymptoceras

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
Temporal range: Mississippian
Asymptoceras newloni
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Nautilida
Superfamily:
Aipocerataceae
Family:
Aipoceratidae
Genus:
Asymptoceras

Ryckholt, 1852
Species
  • A. newtoni Hyatt
  • A. pyxis Shimanskiy, 1967
  • A. tschernovi Shimanskiy, 1990

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

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


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