Suborder:
|
Goniatitina
|
Superfamily:
|
Neoglyphioceratoidea
|
Family:
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Cravenoceratidae
|
Subfamily:
|
Cravenoceratinae
|
Genus:
|
Lyrogoniatites
|
Species:
|
eisenbergensis |
Qualifier:
|
ss |
Author:
|
Ruprecht 1937,p.265
|
Lower Boundary:
|
DER Go gamma poststriat.--eisenbergensis, 328 million years
|
Upper Boundary:
|
DER Go gamma 1-2,liethens.base,P2c base, 327.8 million years
|