Suborder:
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Agoniatitina
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Superfamily:
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Mimoceratoidea
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Family:
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Mimoceratidae
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Genus:
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Gyroceratites
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Species:
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glaber |
Qualifier:
|
ss |
Author:
|
Bogoslovsky 1961,p.61
|
Lower Boundary:
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LD4A--LD4B:G.grac.--Latanar. noeggerati, 401.6 million years
|
Upper Boundary:
|
LD4D A.lateseptatus Zone top[di96:20,00], 398 million years
|