Suborder:
|
Goniatitina
|
Superfamily:
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Dimorphoceratoidea
|
Family:
|
Dimorphoceratidae
|
Subfamily:
|
Glyphiolobinae
|
Genus:
|
Metadimorphoceras |
Qualifier:
|
ge |
Author:
|
Moore 1958,p.222
|
Lower Boundary:
|
DER Go beta gracilis Z.--spirale Z. [13., 328.8 million years
|
Upper Boundary:
|
U Halian--Bloydian, Brentwood base, 313 million years
|