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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Maeneceras
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Species:
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milleri |
Qualifier:
|
ss |
Author:
|
Flower & Caster 1935,p.56
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Lower Boundary:
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UD3B--UD3C:(delphinus Zone base) [14,55], 368 million years
|
Upper Boundary:
|
UD4A--UD4B: dunkeri Zone base [15,55], 366.8 million years
|