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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Baltoceratidae
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Rioceras
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Rioceras dartoni
Rioceras depressum
Rioceras expansum
Rioceras fusiforme
Rioceras lobatum
Rioceras minore
Rioceras nondescriptum
Rioceras oaxacaense
Rioceras tabulare
Rioceras wellsi
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Rioceras dartoni