Suborder:
|
Goniatitina
|
Superfamily:
|
Dimorphoceratoidea
|
Family:
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Eogonioloboceratidae
|
Genus:
|
Arcanoceras
|
Species:
|
burmai+ |
Qualifier:
|
ss |
Author:
|
Miller & Downs 1950,p.576
|
Lower Boundary:
|
UTX Barnett Fm. base, 326.4 million years
|
Upper Boundary:
|
UTX Barnett Fm. top, 323 million years
|