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Suborder:
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Prolecanitina 
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Superfamily:
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Prolecanitoidea 
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Family:
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Prolecanitidae 
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Subfamily:
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Prolecanitinae 
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Genus:
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Prolecanites 
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Species:
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librovitchi | 
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Qualifier:
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ss | 
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Author:
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	Ruzhencev 1949,p.737	 
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Lower Boundary:
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RUS Nm1a1 base, Hypergon.-Ferganoc. GZ, 327.8 million years
 
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| 
Upper Boundary:
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RUS Nm1b1--Nm1b2 (Domb.carinat.--tectus), 324.6 million years
 
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