Suborder:
|
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
|
Species:
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beyrichi+ |
Qualifier:
|
ss |
Author:
|
Gemmellaro 1887,p.56
|
Lower Boundary:
|
Roadian--Wordian (Murgabian) [ROA--WOR], 268 million years
|
Upper Boundary:
|
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|