| 
Suborder:
 | 
Goniatitina 
 | 
| 
Superfamily:
 | 
Gastrioceratoidea 
 | 
| 
Family:
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Glaphyritidae 
 | 
| 
Subfamily:
 | 
Stenoglaphyritinae 
 | 
| 
Genus:
 | 
Subitoceras | 
| 
Qualifier:
 | 
ge | 
| 
Author:
 | 
	Ruzhencev & Bog. 1978	 
 | 
| 
Lower Boundary:
 | 
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
 
 | 
| 
Upper Boundary:
 | 
RUS Nm2a2--Nm2b1,Reticuloc.-Bashkortoc.G, 317.2 million years
 
 |