basis of recordMargulis, L.; Schwartz, K.V. (1998). Five Kingdoms: an illustrated guide to the Phyla of life on earth. 3rd edition. Freeman: New York, NY (USA). ISBN 0-7167-3027-8. xx, 520 pp. (look up in RoR) [details]
additional sourceSterrer, W. (1972). Systematics and evolution within the Gnathostomulida. <i>Syst. Zool. 21(2)</i>: 151-173 (look up in RoR) [details]
Present Inaccurate Introduced: alien Containing type locality