Euomphalus Temporal range:
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Euomphalus pentangulatus | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Family: | †Euomphalidae |
Genus: | †Euomphalus J. de C. Sowerby, 1814 |
Euomphalus is a genus of fossil marine gastropods known to have lived from the Silurian to the Middle Permian.[1][2]
Description
[edit]Euomphalus is characterized by a closely coiled shell with a depressed to slightly elevated spire and a channel-bearing angulation (a selenizone) on the upper surface of the whorls. The lower surface of the whorls is rounded to angular.[1]
Amphiscapha, Philoxene, and Straparollus are among similar related genera. Serpulospira, also related, differs in having a broadly open spiral in the adult form.
Taxonomy
[edit]Euomphalus is the type genus of the family Euomphalidae. Euomphalus pentangulatus (Sowerby, 1814) is its type species.
Species
[edit]- Euomphalus pentangulatus Sowerby, 1814(type)
- Euomphalus radiatus Menke, 1850: synonym of Heliacus (Heliacus) areola bicanaliculatus (Valenciennes, 1832) represented as Heliacus areola bicanaliculatus (Valenciennes, 1832)
References
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