Cryptostomata

plural noun

Cryp·​to·​sto·​ma·​ta

ˌkriptəˈstōmətə

: a group of Paleozoic bryozoa (class Gymnolaemata) in which the true apertures of the zooecia are concealed at the bottom of vestibular tubes

cryptostome

ˈ⸗⸗ˌstōm

adjective or noun

Word History

Etymology

New Latin, from crypt- + -stomata

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