Suborder:
|
Goniatitina
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Superfamily:
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Dimorphoceratoidea
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Family:
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Girtyoceratidae
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Subfamily:
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Girtyoceratinae
|
Genus:
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Tumulites
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Species:
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eurinus |
Qualifier:
|
ss |
Author:
|
Ruzhencev & Bog. 1971,p.187
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Lower Boundary:
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RUS Nm1b1--Nm1b2 (Domb.carinat.--tectus), 324.6 million years
|
Upper Boundary:
|
RUS Nm1c1--Nm1c2(uralicus--Del.bressoni), 322 million years
|