Suborder:
|
Goniatitina
|
Superfamily:
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Neoicoceratoidea
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Family:
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Paragastrioceratidae
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Subfamily:
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Paragastrioceratinae
|
Genus:
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Svetlanoceras
|
Species:
|
notium |
Qualifier:
|
ss |
Author:
|
Ruzhencev 1978,p.49
|
Lower Boundary:
|
Gzhelian--Asselian [C--P], 299 million years
|
Upper Boundary:
|
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|