Suborder:
|
Goniatitina
|
Superfamily:
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Pericycloidea
|
Family:
|
Maxigoniatitidae
|
Subfamily:
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Dzhaprakoceratinae
|
Genus:
|
Dzhaprakoceras
|
Species:
|
djaprakense |
Qualifier:
|
ss |
Author:
|
Librovitch 1927,p.37
|
Lower Boundary:
|
RUN Kos'vinskii gorizont base, 349 million years
|
Upper Boundary:
|
KIT Dzhapryk Fm. A4 top, 345 million years
|