Suborder:
|
Prolecanitina
|
Superfamily:
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Medlicottioidea
|
Family:
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Medlicottiidae
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Subfamily:
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Propinacoceratinae
|
Genus:
|
Propinacoceras |
Qualifier:
|
ge |
Author:
|
Gemmellaro 1887,p.55
|
Lower Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|
Upper Boundary:
|
Wordian--Capitanian (Midian) [WOR--CAP], 265.8 million years
|