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Suborder:
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Goniatitina 
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Superfamily:
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Marathonitoidea 
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Family:
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Marathonitidae 
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Genus:
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Cardiella 
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Species:
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busterensis | 
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Qualifier:
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ss | 
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Author:
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	Tumanskaia 1949,p.69	 
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| 
Lower Boundary:
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TAP Kochusu Fm. base, 270.6 million years
 
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| 
Upper Boundary:
 | 
Kochusu Fm.,lower,basal lst.--lower part, 270.3 million years
 
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