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Suborder:
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Tornoceratina 
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| 
Superfamily:
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Prionoceratoidea 
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| 
Family:
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Prionoceratidae 
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| 
Subfamily:
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Acutimitoceratinae 
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| 
Genus:
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Acutimitoceras 
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| 
Subgenus:
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Stockumites 
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| 
Species:
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antecedens | 
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Qualifier:
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ss | 
| 
Author:
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	Vöhringer 1960,p.140	 
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| 
Lower Boundary:
 | 
Devonian--Carboniferous Boundary   [DCB], 359.2 million years
 
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| 
Upper Boundary:
 | 
DER Ps. westfalicus--Paragattend. patens, 358 million years
 
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