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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Arietitidae
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Arnioceras
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Arnioceras arnouldi
Arnioceras ceratitoides
Arnioceras concinnum
Arnioceras crassicosta
Arnioceras geometricum
Arnioceras hodderi
Arnioceras kridioides
Arnioceras miserabile
Arnioceras nevadanum
Arnioceras nigrum
Arnioceras notatum
Arnioceras semicostatum
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