Suborder:
|
Goniatitina
|
Superfamily:
|
Dimorphoceratoidea
|
Family:
|
Girtyoceratidae
|
Subfamily:
|
Girtyoceratinae
|
Genus:
|
Eumorphoceras
|
Species:
|
mediolobum |
Qualifier:
|
ss |
Author:
|
Kullmann 1962,p.281
|
Lower Boundary:
|
ESC Grey Marl Alba Fm. base, 324 million years
|
Upper Boundary:
|
ESC Grey Marl Alba Fm. top, 321 million years
|