Английская Википедия:Engorthoceratidae
Шаблон:Short description Шаблон:Automatic taxobox
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
- ↑ 1,0 1,1 1,2 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
- ↑ Engorthoceratidae PaleoBiology Database
- Английская Википедия
- Devonian cephalopods
- Prehistoric nautiloid families
- Monogeneric mollusc families
- Devonian first appearances
- Devonian extinctions
- Taxa named by Rousseau H. Flower
- Orthocerida
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