Suborder:
|
Tornoceratina
|
Superfamily:
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Prionoceratoidea
|
Family:
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Prionoceratidae
|
Subfamily:
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Prionoceratinae
|
Genus:
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Imitoceras
|
Species:
|
sp. |
Qualifier:
|
of |
Author:
|
Foord & Crick 1897,p.142
|
Lower Boundary:
|
mid.Tournais.--up.Tournaisian [Tn2--Tn3], 353 million years
|
Upper Boundary:
|
Tournaisian--Visean [TOU--VIS], 345.3 million years
|