01263nas a2200145   4500008004100000245006800041210006500109300001200174490000700186520083600193653001001029100001501039700001901054856004401073       2005                        eng d00aPhylogeny of nereidids (Polychaeta, Nereididae) with paragnaths0 aPhylogeny of nereidids Polychaeta Nereididae with paragnaths  a507-5470 v343 aA phylogenetic analysis was conducted of the Nereidinae — those members of the Nereididae (Polychaeta) with pharyngeal paragnaths. We had two objectives: to test the monophyly of currently accepted genera, subgenera and informal subgeneric groupings within the Nereidinae, and, if warranted, to propose a more natural classi.cation of the Nereidinae. Parsimony analyses were undertaken, including 52 terminal taxa from all genera and informal groupings from the large heterogeneous genera Nereis , Ceratonereis , Neanthes and Perinereis . Analyses of a character set of 52 informative characters yielded more than 10 000 equally parsimonious trees with a length of 176 steps (consistency index [CI] = 0.34, retention index [RI] = 0.66). Reweighting three times resulted in 445 most parsimonious trees with length 54.62 (CI = 0.5910aRW_CV1 aBakken, T.1 aWilson, R., S.  uhttps://annelida.myspecies.info/node/20