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TaxNo: 6542Calygirtyoceras darkaouaense+
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Girtyoceratinae
Genus: Calygirtyoceras
Species: darkaouaense+
Qualifier: ss
Author: Korn, Klug & Mapes 1999,p.354
Lower Boundary: Bollandoc./Bollandit.--Beyrichoceras BZ, 334.5 million years
Upper Boundary: DER Go alpha 2--Go alpha 3 [11.60], 332.3 million years