Suborder:
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Goniatitina
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Superfamily:
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Shumarditoidea
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Family:
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Somoholitidae
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Genus:
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Somoholites |
Qualifier:
|
ge |
Author:
|
Ruzhencev 1938,p.280
|
Lower Boundary:
|
U Atokan--Desmoinesian [ATO--DES], 308.6 million years
|
Upper Boundary:
|
Aktastinian--Baigendzhinian [AKT--BAI], 282 million years
|