Euomphalus
{{short description|Genus of archaeogastropods}}
{{Automatic taxobox
| fossil_range= {{fossil range|Silurian|Kungurian}}
| image = Euomphalus pentangulatus.JPG
| image_caption = Euomphalus pentangulatus
| taxon = Euomphalus
| authority = J. de C. Sowerby, 1814
}}
Euomphalus is a genus of fossil marine gastropods known to have lived from the Silurian to the Middle Permian.J.B.Knight,et al 1960. Treatise on Invertebrate Paleontology, Part I, Mollusca 1, ch on systematic descriptions. Geol Soc of America and Univ Kansas Press.(in Czech) Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R.: Základy zoopaleontologie. - Olomouc, 1996. 264 pp., {{ISBN|80-7067-599-3}}.
Description
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.
Amphiscapha, Philoxene, and Straparollus are among similar related genera. Serpulospira, also related, differs in having a broadly open spiral in the adult form.
Taxonomy
Euomphalus is the type genus of the family Euomphalidae. Euomphalus pentangulatus (Sowerby, 1814) is its type species.
Species
- 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
{{reflist}}
{{Taxonbar|from=Q59741}}
Category:Silurian first appearances
Category:Permian genus extinctions
Category:Paleozoic molluscs of North America
Category:Paleozoic life of Ontario
Category:Paleozoic life of Manitoba
Category:Paleozoic life of the Northwest Territories
Category:Paleozoic life of Nunavut
Category:Carboniferous gastropods
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