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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_
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Tarphyceratidae
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Centrotarphyceras
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Centrotarphyceras alpheusi
Centrotarphyceras billingsi
Centrotarphyceras bridgei
Centrotarphyceras macdonaldi
Centrotarphyceras powersi
Centrotarphyceras subundosum
Centrotarphyceras yellvillense
Lituites imperator
Lituites seelyi
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