Polychaeta, Annelida, and Articulata are not monophyletic: articulating the Metameria (Metazoa, Coelomata)

Abstract

The phylogenetic history of the polychaetes is long and diverse. The first efforts may be characterized as strictly taxonomical. Various authors have differed in the emphases given to the importance of general body shape and feeding habits, some attention being provided to the anatomy of particular structures (