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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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Qualifier:
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fa | 
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Author:
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	Holzapfel 1899,p.12	 
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| 
Lower Boundary:
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CZB elegans--cancellata Zone     [14,20], 404 million years
 
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| 
Upper Boundary:
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mid.--up.varcus Zone             [17,00], 389 million years
 
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