| 
Suborder:
 | 
Clymeniina 
 | 
| 
Superfamily:
 | 
Cyrtoclymenioidea 
 | 
| 
Family:
 | 
Cymaclymeniidae 
 | 
| 
Genus:
 | 
Postclymenia 
 | 
| 
Species:
 | 
euryomphala | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Schindewolf 1937,p.14	 
 | 
| 
Lower Boundary:
 | 
UD6C2--UD6D1:parad.--Wo.sphaeroi.[18,90], 361.6 million years
 
 | 
| 
Upper Boundary:
 | 
UD6E--UD6F:Cym.nigra--A.prorsum  [19,40], 360 million years
 
 |