Palaeechinoidea

plural noun
Palae·​echinoidea

Definition of Palaeechinoidea

in some classifications
: 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

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Other Words from Palaeechinoidea

palaeechinoidean \ ¦⸗⸗+ \ adjective or noun

History and Etymology for Palaeechinoidea

New Latin, from pale- + Echinoidea

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Cite this Entry

“Palaeechinoidea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Palaeechinoidea. Accessed 16 Apr. 2021.

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