choanate

cho·a·nate

(kō'an-āt),
Having a funnel, that is, with a ring or collar.
Farlex Partner Medical Dictionary © Farlex 2012

choanate

any vertebrate possessing internal nostrils.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005