ecofactbook
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species
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Animalia
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Mollusca
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Cephalopoda
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Ammonoidea
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Collignoniceratidae
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Subprionocyclus
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Oregoniceras jacksonense
Oregoniceras jillsoni
Oregoniceras phoenixense
Subprionocyclus normalis
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Oregoniceras jacksonense