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TaxNo: 2066Trimanticoceras bisulcatum
Suborder: Anarcestina
Superfamily: Beloceratoidea
Family: Gephuroceratidae
Subfamily: Gephuroceratinae
Genus: Trimanticoceras
Species: bisulcatum
Qualifier: sh
Author: Roemer 1850,p.39
Lower Boundary: DER do one beta--do one gamma, 377.5 million years
Upper Boundary: UD1J--UD1K:paradox.--A.varicosum [04,85], 376.9 million years