00507nas a2200133   4500008004100000245014800041210006900189300001200258490000700270100001900277700001900296700001500315856004300330       2011                        eng d00aRedescription of the Indo-Pacific polychaete Neanthes pachychaeta (Fauvel, 1918) n. comb. (Annelida, Phyllodocida, Nereididae) and its synonyms0 aRedescription of the IndoPacific polychaete Neanthes pachychaeta  a361-3760 v331 aGlasby, C., J.1 aWilson, R., S.1 aBakken, T.  uhttps://annelida.myspecies.info/node/901620nas a2200145   4500008004100000245007600041210006900117300001400186490000600200520117100206100001501377700001901392700001901411856004401430       2009                        eng d00aOverview of paragnaths in nereidid polychaetes (Polychaeta, Nereididae)0 aOverview of paragnaths in nereidid polychaetes Polychaeta Nereid  a305–3160 v23 aThe form and arrangement of hardened paragnaths on the pharynx of polychaetes in the family Nereididae has for 150 years been used as a principal system of characters to distinguish species and other taxonomic ranks. Recent studies have shown that phylogenetic relationships based solely on paragnaths give different topologies and clade support than relationships inferred from other character systems. Furthermore, recent revisions and species descriptions continue to increase the range of known paragnath forms. We provide the first comprehensive overview of these important morphological characters, with the aim of encouraging more consistent observation and use of a standardized terminology in future studies. Illustrated descriptions and definitions of all known paragnath types are presented and compared. New terminology is introduced to improve description of paragnath types. Hypotheses are proposed for the chemical composition of pargnaths (scleroprotein), homology between different paragnaths types, and earlier studies implicitly proposing the homology of scleroprotein paragnaths with the more plesiomorphic pharyngeal soft papillae are addressed.1 aBakken, T.1 aGlasby, C., J.1 aWilson, R., S.  uhttps://annelida.myspecies.info/node/1301263nas 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