Sorry I forgot to give the reference (since the paper is mine .....)
MARCO OLIVERIO and PAOLO MARIOTTINI
A MOLECULAR FRAMEWORK FOR THE PHYLOGENY OF CORALLIOPHILA AND RELATED
MURICOIDS. J. Mollus. Stud. 2001 67: 215-224.
The paper is based on the analysis of a mithocondrial gene (12S rDNA). We
have also submitted another paper dealing with another gene (the nuclear
spacer ITS-2 rDNA) that supports the same conclusions of the JMA paper.
In the meantime we have added more sequences to then 12S dataset and all
supports the previous conclusions.
Cheers
Marco