Suborder:
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Anarcestina
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Superfamily:
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Triainoceratoidea
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Family:
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Triainoceratidae
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Genus:
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Sandbergeroceras?
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Species:
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anguliferus |
Qualifier:
|
ss |
Author:
|
Roemer 1850,p.40
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Lower Boundary:
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Givetian--Frasnian [GIV--FRS], 385.3 million years
|
Upper Boundary:
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UD1K--UD1L:varicos.--C.holzapfeli [05,35, 375.1 million years
|