Heteroceras
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Heteroceras Temporal range:
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Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Suborder: | †Ancyloceratina |
Family: | †Heteroceratidae |
Genus: | †Heteroceras d'Orbigny, 1849 |
Heteroceras is a Lower Cretaceous heteromorph ammonite belonging to the ancyloceratoidean family, Heteroceratidae.[1]
Description
It is characterized by a helically coiled juvenile shell at the apex followed by slightly curved adult shaft, with a J-shaped section at the end of it. The shell is ribbed; ribs are concave and oblique on the helix, straight and transverse on the later stages.
Distribution
Heteroceras has been found in Argentina, Bulgaria, Colombia (La Guajira), the Czech Republic, France, Italy, Japan, Madagascar, Serbia and Montenegro, South Africa, Spain, Russia and the United States (Kansas, Wyoming).[2] Related genera are Hemibaculites and Cochidites. The family, Heteroceratidae, is a derivative of the Ancyloceratidae.
References
- ^ Wright, C. W. with Callomon, J.H. and Howarth, M.K. (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p. 227.
- ^ "Heteroceras". Fossilworks. Retrieved 15 June 2022.
Further reading
- "Heteroceras". mindat.org. Retrieved 16 June 2022.
- Arkell, et al 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Ammonoidea. Geological Society of America and Univ. Kansas Press.
- For illustrations see Genre Heteroceras, Orbigny 1850Error: "Q3726463" is not a valid Wikidata entity ID.
Categories:
- Articles with 'species' microformats
- Taxonbars desynced from Wikidata
- Taxonbar pages requiring a Wikidata item
- Taxonbars with invalid from parameters
- Taxonbars without secondary Wikidata taxon IDs
- Cretaceous ammonites
- Ammonites of South America
- Cretaceous Africa
- Cretaceous Argentina
- Cretaceous Asia
- Cretaceous Colombia
- Cretaceous Europe
- Cretaceous North America
- Fossils of Japan
- Cretaceous France
- Fossils of France
- Cretaceous Italy
- Fossils of Italy
- Fossils of the United States
- Fossils of Colombia
- Cretaceous Spain
- Fossils of Spain
- Ancyloceratoidea
- Ammonite genera
- All stub articles
- Ammonite stubs