| 
Suborder:
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Agoniatitina 
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| 
Superfamily:
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Agoniatitoidea 
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| 
Family:
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Agoniatitidae 
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| 
Genus:
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Agoniatites 
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| 
Species:
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gannanensis | 
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Qualifier:
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ss | 
| 
Author:
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	Ruan 1987,p.220	 
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| 
Lower Boundary:
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MD2B--MD2C:molar.--terebratum Z. [14,30], 390 million years
 
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| 
Upper Boundary:
 | 
MD2C--MD2D:Afromaenioc.GZ base [16,20], 389.3 million years
 
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