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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Arcestidae
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Proarcestes
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Proarcestes ausseeanus
Proarcestes balfouri
Proarcestes bicarinatus
Proarcestes bramantei
Proarcestes escheri
Proarcestes gabbi
Proarcestes gaytani
Proarcestes hanieli
Proarcestes nevadanus
Proarcestes pacificus
Proarcestes shastensis
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Proarcestes ausseeanus