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TaxNo: 5394Genus Trigonogastrioceras
Suborder: Goniatitina
Superfamily: Schistoceratoidea
Family: Schistoceratidae
Genus: Trigonogastrioceras
Qualifier: gy
Author: Librovitch 1957,p.256
Valid: Diaboloceras Miller & Furnish 1940,p.527
Lower Boundary: RUS Branner./Gastr.--Diabol./Winslow. GZ, 311.7 million years
Upper Boundary: Diabol./Winsl--Paralego./Eowellerites GZ, 309.5 million years