Antedon costatus, Print, Antedon is a genus of free-swimming, stemless crinoids. The genus first appeared in the fossil record in the Cretaceous period

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Antedon costatus, Print, Antedon is a genus of free-swimming, stemless crinoids. The genus first appeared in the fossil record in the Cretaceous period.

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Photo credit: © Artokoloro / Alamy / Afripics
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Keywords: antedon, appeared, costatus, cretaceous, crinoids, fossil, free-swimming, genus, period, print, record, stemless