Suborder:
|
Anarcestina
|
Superfamily:
|
Anarcestoidea
|
Family:
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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
|