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TaxNo: 5676Genus Discoclymenia
Suborder: Tornoceratina
Superfamily: Tornoceratoidea
Family: Posttornoceratidae
Genus: Discoclymenia
Qualifier: ge
Author: Hyatt 1884,p.314
Lower Boundary: UD4B--UD4C: serpentina Zone base [16,45], 366.4 million years
Upper Boundary: UD6E--UD6F:Cym.nigra--A.prorsum [19,40], 360 million years