Suborder:
|
Goniatitina
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Superfamily:
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Gastrioceratoidea
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Family:
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Homoceratidae
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Subfamily:
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Homoceratinae
|
Genus:
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Parahomoceras |
Qualifier:
|
ge |
Author:
|
Ruzhencev & Bog. 1971,p.31
|
Lower Boundary:
|
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|
Upper Boundary:
|
RUS Nm2a2--Nm2b1,Reticuloc.-Bashkortoc.G, 317.2 million years
|