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TaxNo: 2604Tumulites pseudobilinguis C
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Girtyoceratinae
Genus: Tumulites
Species: pseudobilinguis C
Qualifier: ss
Author: Bisat 1928,pl.6
Lower Boundary: GBY E1b -- E1c; DER E1 alpha -- E1 beta, 325 million years
Upper Boundary: DER E1 beta--E1 gamma, 324.3 million years