Suborder:
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Tornoceratina
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Superfamily:
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Praeglyphioceratoidea
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Family:
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Sporadoceratidae
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Genus:
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Sporadoceras
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Species:
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heterolobatum |
Qualifier:
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ss |
Author:
|
Lange 1929,p.50
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Lower Boundary:
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UD2H--UD2I:(mamilliferum base) [12,90], 370 million years
|
Upper Boundary:
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P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|