Santos, C.S., Nonato, E.F. and Petersen, M.E. 2004. Two new species of Opheliidae (Annelida: Polychaeta): Euzonus papillatus sp. n. from a northeastern Brazilian sandy beach and Euzonus mammillatus sp. n. from the continental shelf of southeastern Brazil. Zootaxa. 478, 1 (Mar. 2004), 1–12. DOI:https://doi.org/10.11646/zootaxa.478.1.1.