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Temporal range: Upper Triassic–Mid Jurassic
Cenoceras NT.jpg
Nautilaceae - Cenoceras species.JPG
Fossil of Cenoceras species from Mahajanga, Madagascar
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Superfamily: Nautilaceae
Family: Nautilidae
Genus: Cenoceras
Hyatt, 1884

Cenoceras is an extinct genus within the cephalopod mollusk family Nautilidae, which in turn makes up part of the superfamily Nautilaceae. This genus has been described by Hyatt in 1884. The type species is Cenoceras intermedius (Sowerby).




Shells of these nektonic carnivores are 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).

Fossil range[edit]

Cenoceras has a fossil range from the Upper Triassic, Carnian age to the Middle Jurassic, Callovian age (from 235.0 to 163.5 Ma).[1] [2]


  • Kümmel, B. 1964, Nauiloidea-Nautilida, in The Treatise on Invertebrate Paleontology, Part K, Nautiloidea; Geological Society of America and University of Kansas Press.
  • Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, Baarn. ISBN 90-246-4924-2

External links[edit]