| 
Suborder:
 | 
Goniatitina 
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| 
Superfamily:
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Marathonitoidea 
 | 
| 
Family:
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Marathonitidae 
 | 
| 
Genus:
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Cardiella | 
| 
Qualifier:
 | 
ge | 
| 
Author:
 | 
	Pavlov 1967,p.75	 
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| 
Lower Boundary:
 | 
UTX Graford Fm.--Brad Fm., 305.3 million years
 
 | 
| 
Upper Boundary:
 | 
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
 
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