Suborder:
|
Goniatitina
|
Superfamily:
|
Neoglyphioceratoidea
|
Family:
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Cravenoceratidae
|
Subfamily:
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Cravenoceratinae
|
Genus:
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Cravenoceratoides
|
Species:
|
nititoides |
Qualifier:
|
ss |
Author:
|
Bisat 1932,p.35
|
Lower Boundary:
|
GBY E2b2--E2b3 (holmesi--Cr.nititoides), 321.5 million years
|
Upper Boundary:
|
GBY E2b3--E2c1 C.nititoides--N.stellar.), 321 million years
|