Suborder:
|
Anarcestina
|
Superfamily:
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Triainoceratoidea
|
Family:
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Triainoceratidae
|
Genus:
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Sandbergeroceras
|
Species:
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costatum* |
Qualifier:
|
ss |
Author:
|
Archiac & Verneuil 1842,p.340
|
Lower Boundary:
|
mid.--up.varcus Zone [17,00], 389 million years
|
Upper Boundary:
|
Givetian--Frasnian [GIV--FRS], 385.3 million years
|