Consensus tree from the bayesian analysis using a time heterogeneous model in phase 2.0. * = indicates full support from the posterior probability (pp: 1.00). The Mollusca (pp: 0.75) and all mollusk classes (pp: 1.00) except Bivalvia were recovered. Solenogastres and Cephalopoda were assigned to different substitution models within this run. The branching pattern assembling taxa with similar sequence composition at node one to four is very robust in all analyses (see also table 2). Inserted table: ML bootstrap support (BS) is given for the nodes 1-4 using three suggested doublet models (S6A, S7B, S16). We used two different coding schemes for unpaired sites to infer the possible influence of base composition to the results. BS values are depicted in the order NT/RY: original nucleotide (NT) coded loops in followed by the results providing a recoded (G, A: R; T, C: Y) loop region.