Having (fairly recently) re-approached the gastropod book with a view to updating the systematics and taxonomy, I have taken the opportunity also to make a new start on its sister book on bivalves.
Since the above entailed reviewing the species checklist, I have made checklists of the other molluscan classes for Britain and northwest Europe: Monoplacophora, Aplacophora, Polyplacophora (or Amphineura; chitons), Scaphopoda (tusk-shells), Cephalopoda.
Another group, the Brachiopoda, while not molluscs, are in the same superphylum, Lophophorata – and the list for the group is now completed.
Lophophorata Systematics:
Domain: EUKARYOTA Whittaker & Margulis, 1978 (= Eucarya Woese)
Subdomain: UNIKONTA Cavalier-Smith, 2002
Superkingdom:OPISTHOKONTA Cavalier-Smith, 1987
Clade: FILOZOA Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen and Cavalier Smith, 2008
Clade: APOIKOZOA Budd and Jensen, 2015
Kingdom: ANIMALIA Linné, 1758 (= Metazoa Huxley, Polycytozoa auctt.)
Subkingdom: EUMETAZOA Butschli, 1910
Unranked: BILATERIA Hatschek, 1888
Clade: NEPHROZOA Jondelius, et al., 2002 (= Protostomia [see below] + Deuterostomia Grobben)
Clade: PROTOSTOMIA Grobben, 1908(= Gastroneuralia Harschek, Protostoma auctt.)
Clade: SPIRALIA Nielsen, 1995(≡ Lophotrochozoa Halanych)
Superphylum: LOPHOPHORATA Hyman, 1959 (=PlatyzoaCavalier-Smith, Tentaculata Ax)