Suborder:
|
Goniatitina
|
Superfamily:
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Cycloloboidea
|
Family:
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Vidrioceratidae
|
Genus:
|
Martoceras
|
Species:
|
subinterruptum* |
Qualifier:
|
ss |
Author:
|
Krotov 1885,p.205
|
Lower Boundary:
|
Aktastinian--Baigendzhinian [AKT--BAI], 282 million years
|
Upper Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|