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TaxNo: 891Praeglyphioceras pseudosphaericum+
Suborder: Tornoceratina
Superfamily: Praeglyphioceratoidea
Family: Praeglyphioceratidae
Genus: Praeglyphioceras
Species: pseudosphaericum+
Qualifier: ss
Author: Frech 1897,p.177g
Lower Boundary: UD3B--UD3C:(delphinus Zone base) [14,55], 368 million years
Upper Boundary: P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years