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TaxNo: 2174Dimorphoceras gilbertsoni+*
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Dimorphoceratidae
Subfamily: Dimorphoceratinae
Genus: Dimorphoceras
Species: gilbertsoni+*
Qualifier: ss
Author: Phillips 1836,p.236
Lower Boundary: DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years
Upper Boundary: DER Go alpha 3--Go alpha 4 [13.00], 332 million years