dicyclic
adj. [Gr. dis, twice; kyklos, circle]
(ECHINODERMATA: Crinoidea)
Calyx plates of primitive stalked crinoids that have an additional five infrabasal plates on the aboral side of the basal series found in the monocyclic condition; further plates may be present.

Online Dictionary of Invertebrate Zoology. . 2005.

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