Biology:Umbetoceras

From HandWiki
Short description: Genus of molluscs (fossil)

Umbetoceras
Temporal range: Carboniferous
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Goniatitida
Family: Homoceratidae
Genus: Umbetoceras
Ruzhencev and Bogoslovskaya, 1971

Umbetoceras is an extinct group of marine molluscs. The genus belongs to the goniatitid superfamily Gastrioceratoidea and family Homoceratidae; with examples being found in carboniferous deposits in the Russian Federation and Uzbekistan.

The shell of Umbetoceras is involute in the adult, with an evolute early stage and moderately wide umbilicus. Sculpture consists of strong riblets on intermediate stages with tubercles present on umbilical shoulder. The suture has a wide double pronged ventral lobe with a median saddle that exceeds two thirds its height.

References

Wikidata ☰ Q7881306 entry