plural noun Palae·echinoidea

Definition of Palaeechinoidea

in some classifications

  1. :  a division of extinct chiefly Paleozoic sea urchins having the test usually composed of more than 20 meridional rows of plates that often overlap and jaws always present — compare euechinoidea


adjective or noun

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Origin and Etymology of palaeechinoidea

New Latin, from pale- + Echinoidea

Seen and Heard

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to cast off or become cast off

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