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TaxNo: 6026Genus Umbetoceras
Suborder: Goniatitina
Superfamily: Gastrioceratoidea
Family: Homoceratidae
Subfamily: Homoceratinae
Genus: Umbetoceras
Qualifier: ge
Author: Ruzhentsev & Bog. 1971,p.28
Lower Boundary: RUS Nm2a2--Nm2b1,Reticuloc.-Bashkortoc.G, 317.2 million years
Upper Boundary: RUS Nm2c2 top;Biling./Canc.--Bran./Gast., 313 million years