Cenoceras

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Cenoceras
Temporal range: Upper Triassic–Mid Jurassic
Cenoceras NT.jpg
Restoration
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Superfamily: Nautilaceae
Family: Nautilidae
Genus: Cenoceras
Hyatt, 1884

The genus Cenoceras is a member of the Nautilidae, which in turn makes up part of the superfamily Nautilaceae.

Cenoceras is variable in form, depending on species; ranges from evolute to involute, compressed lenticular to globose with rounded to flattened venter and flanks. The suture generally has shallow ventral and lateral lobes. The location of the siphuncle is variable, but never at an extreme ventral or dorsal position (Kümmel 1964, K449).

Cenoceras, described by Hyatt in 1884, has a range from the Upper Triassic to the Middle Jurassic. The genotype is Cenoceras intermedius (Sowerby).

References[edit]

  • Kümmel, B. 1964, Nauiloidea-Nautilida, in The Treatise on Invertebrate Paleontology, Part K, Nautiloidea; Geological Society of America and University of Kansas Press.