Suborder:
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Tornoceratina
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Superfamily:
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Tornoceratoidea
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Family:
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Tornoceratidae
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Subfamily:
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Tornoceratinae
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Genus:
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Tornoceras
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Species:
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sublentiforme |
Qualifier:
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ss |
Author:
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Sobolev 1914,p.56
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Lower Boundary:
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UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
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Upper Boundary:
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P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|