ecofactbook
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species
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Animalia
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Echinodermata
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Crinoidea
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Calceocrinidae
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Halysiocrinus
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Halysiocrinus carinatus
Halysiocrinus cumberlandensis
Halysiocrinus keyserensis
Halysiocrinus robustus
Halysiocrinus septarmatus
Halysiocrinus springeri
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