The Continuing Debate on Deep Molluscan Phylogeny: Evidence for Serialia (Mollusca, Monoplacophora + Polyplacophora)

Table 3

Testing alternative topologies against various data sets. Results of Approximately Unbiased (AU) tests with Treefinder [36], various schemes. 𝑃-values of AU Test executed on selected taxon and data sets. Tested tree topologies were constrained in RAxML [28]. Only meaningful tests have been executed. 𝑃-value > 0.05: constrained topology is not rejected; 𝑃-value < 0.05: constrained topology is rejected significantly; 𝑃-value = 0: constrained topology is rejected with high significance.

Constrained topology	142-taxon set. all markers	81-taxon set. all markers	142-taxon set. 18S + 28S + H3	Aplacophora removed from 142-taxon set. all markers
Sinusoida	0.4244	Not tested	0.2652	0.0383
Mollusca + Kamptozoa	0.0	Not tested	0.0	0.0
Mollusca + Annelida	0.7421	0.7097	0.4090	0.3876
Testaria	0.0	0.0	0.0	Not tested
Aculifera	0.0	0.0	0.0	Not tested
Aplacophora	0.6908	0.3651	0.7730	Not tested
Conchifera	0.0	0.0	0.0	0.0333
Pleistomollusca	0.6665	0.0	0.0863	0.1927
Monoplacophora + Cephalopoda	0.1389	0.0632	0.0	0.2779
Scaphopoda + Gastropoda + Bivalvia	0.0154	0.0	0.0	0.1065
Scaphopoda + Cephalopoda	0.1913	0.0	0.2527	0.6914
Scaphopoda + Cephalopoda + Gastropoda	0.0	0.0	0.0	0.7232
Scaphopoda + Gastropoda	0.8850	0.9452	0.0573	0.8271
Diasoma (Scaphopoda + Bivalvia)	0.0	0.0	0.0	0.0
Monophyletic Protobranchia	0.0219	0.0	0.1085	0.0188
Dorsoconcha	0.6830	0.1097	0.3503	0.4048
Variopoda	0.3170	0.8903	0.6497	0.5952