Suborder:
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Goniatitina
|
Superfamily:
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Gastrioceratoidea
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Family:
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Glaphyritidae
|
Subfamily:
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Stenoglaphyritinae
|
Genus:
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Euroceras |
Qualifier:
|
ge |
Author:
|
Ruzhencev & Bog. 1971
|
Lower Boundary:
|
RUS Nm1b2--Nm1c1,Fayettevillea-Delepinoc, 324 million years
|
Upper Boundary:
|
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|