| 
Suborder:
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Tornoceratina 
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| 
Superfamily:
 | 
Prionoceratoidea 
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| 
Family:
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Prionoceratidae 
 | 
| 
Subfamily:
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Prionoceratinae 
 | 
| 
Genus:
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Irinoceras 
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| 
Species:
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weyeri | 
| 
Qualifier:
 | 
ss | 
| 
Author:
 | 
	Work & Nassichuk 2000,p.33	 
 | 
| 
Lower Boundary:
 | 
UAR Walls Ferry Fm. base, 356 million years
 
 | 
| 
Upper Boundary:
 | 
UAR Walls Ferry Fm. top, 353 million years
 
 |