Holectypina

plural noun

Ho·​lec·​ty·​pi·​na

hōˌlektəˈpīnə

: a suborder of extinct sea urchins (order Exocycloida) having a central peristome, an excentric periproct, an Aristotle's lantern, and nonpetaloid ambulacra and found in Jurassic, Cretaceous, and Eocene strata

Word History

Etymology

New Latin, from Holectypus, genus of sea urchins (from hol- + Greek ektypos worked in relief) + -ina

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