| 
Suborder:
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Goniatitina 
 | 
| 
Superfamily:
 | 
Pericycloidea 
 | 
| 
Family:
 | 
Pericyclidae 
 | 
| 
Subfamily:
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Hammatocyclinae 
 | 
| 
Genus:
 | 
Hammatocyclus? 
 | 
| 
Species:
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tumidus | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Roemer 1852,p.94	 
 | 
| 
Lower Boundary:
 | 
DER Erdbacher Kalk base [05,40], 349.5 million years
 
 | 
| 
Upper Boundary:
 | 
DER Erdbacher Kalk top [08,90], 345.3 million years
 
 |