Species (2.191)
- Chama ferruginea
- Chama gryphioides
- Chione crenulata
- Chione fasciata
- Chione gallina
- Cerastoderma ciliatum
- Ceratosderma crassum
- Ceratosderma exiguum
- Ceratosderma papillosum
- Ceratosderma parvum
- Ceratosderma punctatum
- Chione puerpera
- Chione senilis
- Chione pectorina
- Circomphalus paphia
- Macoma baltica Linnaeus 1758
- Macoma carlottensis
- Macoma cleryana
- Macoma crassula
- Macoma elliptica
- Macoma elimata
- Macoma fusca
- Macoma indentata
- Macoma groenlandica
- Macoma moesta
- Macoma obliqua
- Macoma oneilli
- Macoma secta
- Macoma praetenuis
- Macoma torelli
- Mactra procrassa
- Mactra plicataria Linne 1767
- Mactra solidissima
- Mactra spengleri Linne 1767
- Mactra striatula Linne 1767
- Mactra subtruncata
- Lutraria aegyptiaca
- Lutraria canaliculata
- Lutraria cumingiana
- Lutraria chemnitzii ssp. philippi
- Lutraria frangula
- Lutraria elliptica
- Lutraria lateralis
- Lutraria maxima
- Lutraria papyracea
- Lutraria oblonga
- Lutraria rugosa
- Lutraria plicatella
- Lutraria plicatilis
- Lutraria silicula
- Lutraria solenoides
- Lutraria zelandica
- Mactra truncata
- Mactra angulifera
- Mactra angusta
- Mactra arcuata
- Mactra antiquata Spengler 1802
- Mactra byronensis
- Mactra carinulata
- Mactra deaurata
- Mactra elegans
- Mactra elliptica
- Mactra exoleta
- Mactra goniata
- Mactra lateralis
- Mactra nasuta
- Mactra ponderosa
- Mactra sericea
- Mactra typica
- Mactra triangula
- Meleagrinella echinata
- Mercenaria mercenaria Linnaeus
- Meretrix meretrix Linnaeus
- Meretrix rostrata
- Meretrix umbonella
- Mesodesma angusta
- Mesodesma aequilatera
- Mesodesma anodontina
- Mesodesma cornea
- Mesodesma cuneata
- Mesodesma crassula
- Mesodesma elongata
- Mesodesma donacia
- Mesodesma glabrata
- Mesodesma erycina ssp. mactroides
- Mesodesma lanceolata
- Mesodesma jouresii
- Mesodesma novae ssp. zelandiae
- Mesodesma plana
- Mesodesma spissa
- Mesodesma ovalis
- Mesodesma triquetra
- Mesodesma striata
- Meiocardia harpa
- Miltha solvayi
- Montacuta spatangi
- Montacuta substriata Montagu 1808
- Montacuta voeringi
- Monterosatus macoma
- Monitilora duponti