Suborder:
|
Tornoceratina
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Superfamily:
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Prionoceratoidea
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Family:
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Prionoceratidae
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Subfamily:
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Prionoceratinae
|
Genus:
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Irinoceras
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Species:
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sp. |
Qualifier:
|
of |
Author:
|
Campbell et al. 1983,p.83
|
Lower Boundary:
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AUN Dangarfield Formation base, 350 million years
|
Upper Boundary:
|
AUN Namoi + Dangarfield top, 345.3 million years
|