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TaxNo: 5775Subfamily Tornoceratinae
Suborder: Tornoceratina
Superfamily: Tornoceratoidea
Family: Tornoceratidae
Subfamily: Tornoceratinae
Qualifier: fs
Author: Arthaber 1911,p.175
Lower Boundary: mid.--up.varcus Zone [17,00], 389 million years
Upper Boundary: UD5C--UD6A1: Sphenoclym.brevispina base, 364 million years