Suborder:
|
Goniatitina
|
Superfamily:
|
Cycloloboidea
|
Family:
|
Cyclolobidae
|
Subfamily:
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Kufengoceratinae
|
Genus:
|
Paramexicoceras
|
Species:
|
sp.nov. |
Qualifier:
|
of |
Author:
|
Nassichuk 1995,p.230
|
Lower Boundary:
|
Wuchiapingian--Changhsingian [DZH--CHX], 253.8 million years
|
Upper Boundary:
|
Permian--Triassic (Induan base), 251 million years
|