Priapuloidea
plural noun
Pri·ap·u·loi·dea
prīˌapyəˈlȯidēə
: a group of marine worms of obscure position that are classed as a division of Gephyrea and that somewhat resemble the Sipunculoidea from which they are distinguished by the absence of tentacles and usually by the presence of caudal gills
Word History
Etymology
New Latin, from Priapulus, genus of marine worms (from priapus phallus + -ulus -ule) + -oidea