plural noun

: a subclass or order of small primitive Devonian elasmobranchs including the genus Cladoselache in which the paired fins are supported by unjointed parallel radial cartilages extending straight outward to the fin membrane and claspers are locking

Word History


New Latin, from pleur- + -pterygii

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Dictionary Entries Near Pleuropterygii

Cite this Entry

“Pleuropterygii.” Dictionary, Merriam-Webster, Accessed 18 Jun. 2024.

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