Aviculopecten
(tree size 8)
Chironopecten
Aviculopectininae
Hayasakapectininae
Chaenocardiinae
Spyridopectininae
Euchondriinae
Echiniferipectininae
Koninckopecten
(tree size 1)
Limipecten
(tree size 1)
Deltopecten