Suborder:
|
Goniatitina
|
Superfamily:
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Shumarditoidea
|
Family:
|
Somoholitidae |
Qualifier:
|
fa |
Author:
|
Ruzhencev 1938,p.280
|
Lower Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|
Upper Boundary:
|
UTX Kungurian/Leonardian base, 275.6 million years
|