Alexander B. Doweld
The genus Choanophorus (type species C. indicus Bubko, by original designation) was established by Bubko for a distinctive annelid (Siboglinidae) from the Indian Ocean. However, Choanophorus Caballero, a living helminth, preceded annelid generic name, which becomes a preoccupied later homonym. The helminth Choanophorus is well recognized in modern zoology, served even in the past a type of a distinct family Choanophoridae Caballero, but now recognized in family Pronocephalidae Looss as a distinct genus in current use, and in this connection a new generic designation is necessary for later homonymic annelid genus.