| 
Suborder:
 | 
Goniatitina 
 | 
| 
Superfamily:
 | 
Gastrioceratoidea 
 | 
| 
Family:
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Homoceratidae 
 | 
| 
Subfamily:
 | 
Homoceratinae 
 | 
| 
Genus:
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Homoceras 
 | 
| 
Species:
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mnemancestrale | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Korn 1997,p.67	 
 | 
| 
Lower Boundary:
 | 
GBY R1b--R1c (Ph.nodosum--R.reticulatum), 315.4 million years
 
 | 
| 
Upper Boundary:
 | 
Kinderscoutian--Marsdenian    [KIN--MRD], 315 million years
 
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