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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Pirasocrinidae
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Aatocrinus
Affinocrinus
Lasanocrinus
Metaperimestocrinus
Perimestocrinus
Plaxocrinus
Stenopecrinus
Triceracrinus
Utharocrinus
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