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Palaeocrinoidea

plural noun
Palaeo·​crinoidea

Definition of Palaeocrinoidea

in some classifications
: an order of Paleozoic stalked crinoids of supposedly primitive type having the actinal side of the calyx closed — compare neocrinoidea

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History and Etymology for Palaeocrinoidea

New Latin, from pale- + Crinoidea

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