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TaxNo: 3361Aclistoceras smithwickense
Suborder: Goniatitina
Superfamily: Gastrioceratoidea
Family: Glaphyritidae
Subfamily: Stenoglaphyritinae
Genus: Aclistoceras
Species: smithwickense
Qualifier: ss
Author: Plummer & Scott 1937,p.109
Lower Boundary: UTX Smithwick Fm. base, 308.9 million years
Upper Boundary: UTX Smithwick Fm. top, 308.6 million years