^ abHirose, M.; Fukiage, R.; Katoh, T.; Kajihara, H. (2014). Description and molecular phylogeny of a new species of Phoronis (Phoronida) from Japan, with a redescription of topotypes of P. ijimai Oka, 1897. ZooKeys. 398, 1-31. doi:10.3897/zookeys.398.5176