Suborder:
|
Tornoceratina
|
Superfamily:
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Tornoceratoidea
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Family:
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Tornoceratidae
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Subfamily:
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Tornoceratinae
|
Genus:
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Tornoceras
|
Species:
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amuletum_aff. |
Qualifier:
|
af |
Author:
|
Becker et al. 2004,p.42
|
Lower Boundary:
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MD2D--MD3A:A.sulcat.--Pharc.lateseptatum, 389 million years
|
Upper Boundary:
|
MD3A--MD3B:latesept.--lunulicosta[17,90], 388 million years
|