Radashevsky, V. I., V. V. Malyar, V. V. Pankova, and S. V. Nuzhdin. “Molecular Analysis of Six Rhynchospio Hartman, 1936 Species (Annelida: Spionidae) With Comments on the Evolution of Brooding Within the Group”. Zootaxa, vol. 4127, no. 3, June 2016, pp. 579–590, doi:10.11646/zootaxa.4127.3.10.