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TaxNo: 2643Girtyoceras welleri
Suborder: Goniatitina
Superfamily: Dimorphoceratoidea
Family: Girtyoceratidae
Subfamily: Girtyoceratinae
Genus: Girtyoceras
Species: welleri
Qualifier: ss
Author: Gordon 1965,p.233
Lower Boundary: UAR Lower Moorefield base, 333 million years
Upper Boundary: UAR Upper Moorefield top, 329.4 million years