Table 5.

List of taxa used in the phylogenetic analysis

Taxon	Classification	GenBank Accession Number
Polyplacophora
Katharina tunicata	Neoloricata; Chitonida; Acanthochitonina; Mopaliidae	NC_001636
Gastropoda
Aplysia californica	Orthogastropoda; Apogastropoda; Heterobranchia; Euthyneura; Opisthobranchia; Anaspidea; Aplysioidea; Aplysiidae;	NC_005827
Pupa strigosa	Orthogastropoda;Apogastropoda; Heterobranchia; Euthyneura; Opisthobranchia; Architectibranchia; Acteonoidea; Acteonidae	NC_002176
Albinaria caerulea	Pulmonata; Stylommatophora; Sigmurethra; Clausilioidea; Clausiliidae	NC_001761
Cepaea nemoralis	Pulmonata; Stylommatophora; Sigmurethra; Helicoidea; Helicidae	NC_001816
Bivalvia
Mytilus galloprovincialis	Bivalvia; Pteriomorphia; Mytiloida;Mytiloidea; Mytilidae	NC_006886
Mytilus edulis	Bivalvia; Pteriomorphia; Mytiloida; Mytiloidea; Mytilidae	NC_006161
Argopecten irradians	Bivalvia; Pteriomorphia; Pectinoida;Pectinoidea; Pectinidae
Placopecten magellanicus	Bivalvia; Pteriomorphia; Pectinoida;Pectinoidea; Pectinidae	NC_007234
Mizuhopecten yessoensis	Bivalvia; Pteriomorphia; Pectinoida;Pectinoidea; Pectinidae	NC_009081
Chlamys farreri	Bivalvia; Pteriomorphia; Pectinoida;Pectinoidea; Pectinidae
Crassostrea virginica	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_007175
Crassostrea gigas	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	EU672831
Crassostrea angulata	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_012648
Crassostrea sikamea	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_012649
Crassostrea hongkongensis	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_011518
Crassostrea ariakensis	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_012650
Crassostrea iredalei	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_013997
Saccostrea mordax	Bivalvia; Pteriomorphia; Ostreoida;Ostreoidea; Ostreidae	NC_013998