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Suborder:
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Prolecanitina 
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| 
Superfamily:
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Medlicottioidea 
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| 
Family:
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Medlicottiidae 
 | 
| 
Subfamily:
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Propinacoceratinae 
 | 
| 
Genus:
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Propinacoceras 
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| 
Species:
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sp. | 
| 
Qualifier:
 | 
in | 
| 
Author:
 | 
	div. authors 	 
 | 
| 
Lower Boundary:
 | 
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
 
 | 
| 
Upper Boundary:
 | 
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
 
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