Suborder:
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Goniatitina
|
Superfamily:
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Goniatitoidea
|
Family:
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Delepinoceratidae |
Qualifier:
|
fa |
Author:
|
Ruzhencev 1957,p.58
|
Lower Boundary:
|
RUS Nm1a1 base, Hypergon.-Ferganoc. GZ, 327.8 million years
|
Upper Boundary:
|
RUS Nm1c2--Nm2a1, Homoc.-Hudsonoc.GZ, 318.1 million years
|