| 
Suborder:
 | 
Anarcestina 
 | 
| 
Superfamily:
 | 
Anarcestoidea 
 | 
| 
Family:
 | 
Holzapfeloceratidae 
 | 
| 
Genus:
 | 
Holzapfeloceras 
 | 
| 
Species:
 | 
denckmanni | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Holzapfel 1895,p.72	 
 | 
| 
Lower Boundary:
 | 
ensensis--hemiansatus Zone       [08,20], 391.8 million years
 
 | 
| 
Upper Boundary:
 | 
mid.--up.varcus Zone             [17,00], 389 million years
 
 |