> as lemmas

1958 Q. Rev. Biol. 33 35/1 We are ignorant of the origin of the priapulids; and even the position of these three species of protostomatous, wormlike animals is uncertain.

1994 Ann. Rev. Ecol. & Systematics 25 359 In development, they [sc. nemertines] exhibit spiralian cleavage and are protostomatous.