| 
Suborder:
 | 
Goniatitina 
 | 
| 
Superfamily:
 | 
Dimorphoceratoidea 
 | 
| 
Family:
 | 
Girtyoceratidae 
 | 
| 
Subfamily:
 | 
Girtyoceratinae 
 | 
| 
Genus:
 | 
Jeminayceras | 
| 
Qualifier:
 | 
gy | 
| 
Author:
 | 
	Wang 1983,p.520	 
 | 
| 
Valid:
 | 
Girtyoceras Wedekind 1918,p.140 | 
| 
Lower Boundary:
 | 
Up.Visean  Goniatites BZ base [up.VIS], 333.5 million years
 
 | 
| 
Upper Boundary:
 | 
Pendleian--Arnsbergian        [PND--ARN], 324 million years
 
 |