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TaxNo: 5661Genus Cryptoclymenia
Suborder: Tornoceratina
Superfamily: Praeglyphioceratoidea
Family: Sporadoceratidae
Genus: Cryptoclymenia
Qualifier: gy
Author: Hyatt 1884,p.314
Valid: Sporadoceras Hyatt 1884,p.321
Lower Boundary: UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
Upper Boundary: UD5C--UD6A1: Sphenoclym.brevispina base, 364 million years