Taxacom: Mollusca trees (as well as Arthropoda) seem to still suffer from misrooting

[David Campbell]

Paleontological, anatomical, and genomic data strongly support the
conventional understanding.  Bivalves are not the basal mollusks, they are
not paraphyletic to other extant mollusks, and euthyneuran gastropods are
derived within gastropoda, not giving rise to other groups.  Radulae have
been lost numerous times within the Mollusca.  The paleontological evidence
points to single-part shells deriving from multipart.  It's not explainable
by misrooting, as rooting is based on including other phyla, not on
assuming a configuration within Mollusca,

-- 
Dr. David Campbell
Associate Professor, Geology
Department of Natural Sciences
110 S Main St, #7270
Gardner-Webb University
Boiling Springs NC 28017