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TaxNo: 5628Genus Holzapfeloceras
Suborder: Anarcestina
Superfamily: Anarcestoidea
Family: Holzapfeloceratidae
Genus: Holzapfeloceras
Qualifier: ge
Author: Miller 1932,p.330
Lower Boundary: MD1B--MD1C (Pin.jugleri Z.base) [00,55], 396.5 million years
Upper Boundary: mid.--up.varcus Zone [17,00], 389 million years