Suborder:
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Anarcestina
|
Superfamily:
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Beloceratoidea
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Family:
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Beloceratidae
|
Genus:
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Mesobeloceras
|
Species:
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sp. |
Qualifier:
|
in |
Author:
|
div. authors
|
Lower Boundary:
|
UD1D--UD1E:S.syngon.--P.lutheri [02,00], 381.6 million years
|
Upper Boundary:
|
UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|