Endorioceras

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Endorioceras
Temporal range: Ordovician
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Orthocerida
Family: Baltoceratidae
Genus: Endorioceras
Flower (1964)

Endorioceras is an extinct

mya, existing for approximately 11 million years.[1]

Taxonomy

Endorioceras was named by Flower (1964). It is not extant. Its type is Endorioceras rarum. It was assigned to Baltoceratidae by Flower (1964); and to Ellesmerocerida by Sepkoski (2002).[2][3]

Morphology

The shell is usually long, and may be straight ("orthoconic") or gently curved. In life, these animals may have been similar to the modern squid, except for the long shell.

References

  1. ^ PaleoBiology Database: Endorioceras, basic info
  2. ^ J. J. Sepkoski. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
  3. ^ S. C. Hook and R. H. Flower. 1977. Late Canadian (Zones J, K) cephalopod faunas from Southwestern United States. New Mexico Bureau of Mines and Mineral Resources 32:1-56
  • Fossils (Smithsonian Handbooks) by
    David Ward