| 
Suborder:
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Tornoceratina 
 | 
| 
Superfamily:
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Tornoceratoidea 
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| 
Family:
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Tornoceratidae 
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| 
Subfamily:
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Falcitornoceratinae 
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| 
Genus:
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Phoenixites 
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| 
Species:
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keyserlingi | 
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Qualifier:
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ss | 
| 
Author:
 | 
	Müller 1956,p.49	 
 | 
| 
Lower Boundary:
 | 
UD1B--UD1C:stylioph.--T.kayserl. [01,70], 383.3 million years
 
 | 
| 
Upper Boundary:
 | 
UD1G--UD1H:kayseri--B.tenuistr.  [03,10], 378.7 million years
 
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