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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Linguatornoceras
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Species:
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sp. |
Qualifier:
|
in |
Author:
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div. authors
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Lower Boundary:
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UD1L--UD2A:(frechi Zone base) [06,10], 374.5 million years
|
Upper Boundary:
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UD2F--UD2G:(subvaricatum Zone base), 370.8 million years
|