Engorthoceratidae

Engorthoceratidae
Temporal range: Devonian
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Orthocerida
Family: Engorthoceratidae
Flower, 1962
Genus: Engorthoceras
Flower, 1962

Engorthoceratidae is a small family of Devonian orthocerids and a class of cephalopod found in eastern North America (Ohio and Indiana), containing only the genus Engorthoceras.[1][2]

Taxonomy

Engorthoceratidae was named in 1962 by Rousseau Flower to contain the genus Engorthoceras, also named by Flower (1962), and assigned to the Michelinceratida. The genotype is Orthoceras worthoni.[1]

Morphology

Engorthoceras produced straight conical shells with a subcircular cross section and a small completely marginal siphuncle.[1] The conical shell is suggestive of belemnite phragmocones and of its possible ancestry to Eobelemites. Nothing is known of the animal itself.

References

  1. 1 2 3 R. H. Flower. (1962). "Notes on the Michelinoceratida". State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Memoir 10, Part II
  2. Engorthoceratidae PaleoBiology Database
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