Dinophilidae (Annelida) is most likely not a progenetic Eunicida: evidence from 18S and 28S rDNA.

@article{Struck2005DinophilidaeI,
  title={Dinophilidae (Annelida) is most likely not a progenetic Eunicida: evidence from 18S and 28S rDNA.},
  author={Torsten Hugo Struck and Kenneth M. Halanych and G{\"u}nter Purschke},
  journal={Molecular phylogenetics and evolution},
  year={2005},
  volume={37 2},
  pages={619-23}
}
Dinophilidae (e.g., Dinophilus O. Schmidt, 1848) is a typical meiofaunal polychaete taxon with a seemingly simple organisation, e.g., no parapodia, only a few segments (Rouse and Pleijel, 2001). Dinophilidae is thought to be an eunicidan taxon and is often presented as the classical example of progenetic evolution within annelids (Westheide, 1987). The retention of ancestral juvenile characters by adult stages of descendants (paedomorphosis) can arise either by a retardation of somatic… CONTINUE READING