Petalosticha

Pet`a`los´ti`cha

n. pl.

(Zool.) An order of Echini, including the irregular sea urchins, as the spatangoids. See Spatangoid.

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.

References in periodicals archive

Echini, Desmoticha and Petalosticha. Australian Museum, Catalogue No.

Paleontological study of the echinoderms in the Qom formation

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