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TaxNo: 145Masonoceras bradfordi
Suborder: Tornoceratina
Superfamily: Karagandoceratoidea
Family: Karagandoceratidae
Genus: Masonoceras
Species: bradfordi
Qualifier: ss
Author: Manger 1971,p.35
Lower Boundary: UOH Logan Fm. base, 357.5 million years
Upper Boundary: UOH Logan Fm. top, 353 million years