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TaxNo: 6784Subfamily Sporadoceratinae
Suborder: Tornoceratina
Superfamily: Praeglyphioceratoidea
Family: Sporadoceratidae
Subfamily: Sporadoceratinae
Qualifier: fy
Author: Korn 2002,p.573
Valid: Sporadoceratidae Miller & Furnish,1957 [TAX5829]
Lower Boundary: UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
Upper Boundary: UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years