Suborder:
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Prolecanitina
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Superfamily:
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Medlicottioidea
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Family:
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Medlicottiidae
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Subfamily:
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Propinacoceratinae
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Genus:
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Propinacoceras
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NomSpecies:
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affine
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Species:
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simplex |
Qualifier:
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sn |
Author:
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Tumanskaia 1931,p.52
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Lower Boundary:
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Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|
Upper Boundary:
|
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|