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TaxNo: 2064Holzapfeloceras micromphalum
Suborder: Anarcestina
Superfamily: Anarcestoidea
Family: Holzapfeloceratidae
Genus: Holzapfeloceras
Species: micromphalum
Qualifier: ss
Author: Roemer 1850,p.19
Lower Boundary: DER Wissenbach Shale base, 402 million years
Upper Boundary: DER Wissenbach Shale top, 394.5 million years