Suborder:
|
Tornoceratina
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Superfamily:
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Karagandoceratoidea
|
Family:
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Qiannanitidae
|
Genus:
|
Qiannanites |
Qualifier:
|
ge |
Author:
|
Ruan 1981,p.133
|
Lower Boundary:
|
Devonian--Carboniferous Boundary [DCB], 359.2 million years
|
Upper Boundary:
|
low.Tournais.--mid.Tournais. [Tn1--Tn2], 357.5 million years
|