original description
Murphy, D. G. (1964). Free-living marine nematodes, I. Southerniella youngi, Dagda phinneyi, and Gammanema smithi, new species. Proc. helminth. Soc. Wash. 31: 190-198. (look up in IMIS) [details]
basis of record
Various Authors (2000). Nematode filing cabinet of the Marine Biology Section Ugent - in combination with the NemasLan Ms-Access database (published on CD-Rom, 2000) (look up in IMIS) [details]
From editor or global species database