Arca montensis Cossmann, 1908 † (original description)
Arcoperna gibbosula Cossmann, 1908 † (original description)
Arcoperna lithodomoides Cossmann, 1908 † (original description)
Barbatia (Acar) scaberrima Cossmann, 1908 † accepted as Acar scaberrima (Cossmann, 1908) † (original description)
Barbatia rutoti Cossmann, 1908 † (original description)
Basterotia fallaciosa Cossmann, 1908 † accepted as Fulcrella fallaciosa (Cossmann, 1908) † (original description)
Cardita dimorpha Cossmann, 1908 † (original description)
Cardium (Loxocardium) briarti Cossmann, 1908 † accepted as Loxocardium briarti (Cossmann, 1908) † (original description)
Cardium (Plagiocardium) tenuitesta Cossmann, 1908 † accepted as Parvicardium tenuitesta (Cossmann, 1908) † (original description)
Chama ancestralis Cossmann, 1908 † (original description)
Corbis montensis Cossmann, 1908 † accepted as Fimbria montensis (Cossmann, 1908) † (original description)
Corbis transversaria Cossmann, 1908 † accepted as Fimbria transversaria (Cossmann, 1908) † (original description)
Corbula (Agina) lefevrei Cossmann, 1908 † accepted as Varicorbula lefevrei (Cossmann, 1908) † (original description)
Corbula (Cuneocorbula) semirugata Cossmann, 1908 † accepted as Cuneocorbula semirugata (Cossmann, 1908) † (original description)
Corbula koeneni Cossmann, 1908 † accepted as Caryocorbula koeneni (Cossmann, 1908) † (original description)
Corbula montensis Cossmann, 1908 † accepted as Caryocorbula montensis (Cossmann, 1908) † (original description)
Corbulomya amphibola Cossmann, 1908 † accepted as Lentidium amphibola (Cossmann, 1908) † (original description)
Crassatella excelsa Cossmann, 1908 † (original description)
Crassatella montensis Cossmann, 1908 † (original description)
Cyrena (Velorita) J. E. Gray, 1840 † accepted as Villorita J. E. Gray, 1833 (basis of record)
Cyrena (Velorita) pireti Cossmann, 1908 † accepted as Polymesoda pireti (Cossmann, 1908) † (original description)
Cyrena rutoti Cossmann, 1908 † accepted as Geloina rutoti (Cossmann, 1908) † (original description)
Diplodonta (Felaniella) vincenti Cossmann, 1908 † accepted as Felaniella ravni Glibert & Van de Poel, 1973 † (original description)
Diplodonta symmetrica Cossmann, 1908 † accepted as Geloina rutoti (Cossmann, 1908) † (original description)
Diplodonta tenuis Cossmann, 1908 † (original description)
Eberzinella houzeaui (É. Vincent, 1930) † (additional source)
Erycina briarti Cossmann, 1908 † (original description)
Fossularca koeneni Cossmann, 1908 † accepted as Arcopsis koeneni (Cossmann, 1908) † (original description)
Gastrochoena corneti Cossmann, 1908 † accepted as Gastrochaena corneti Cossmann, 1908 † (original description)
Gobraeus (Psammotaena) duponti Cossmann, 1908 † accepted as Adansonella duponti (Cossmann, 1908) † (original description)
Hindsiella praecursor Cossmann, 1908 † (original description)
Leda rhamphidium Cossmann, 1908 † accepted as Jupiteria rhamphidium (Cossmann, 1908) † (original description)
Lentidium cossmanni Glibert & Van de Poel, 1973 † (additional source)
Lima (Acesta) montensis Cossmann, 1908 † accepted as Acesta montensis (Cossmann, 1908) † (original description)
Lima (Limatula) hexagonalis Cossmann, 1908 † accepted as Limatula hexagonalis (Cossmann, 1908) † (original description)
Lima pireti Cossmann, 1908 † accepted as Ctenoides pireti (Cossmann, 1908) † (original description)
Limopsis minuscula Cossmann, 1908 † accepted as Cosmetopsis minusculum (Cossmann, 1908) † (original description)
Martesia rutoti Cossmann, 1908 † (original description)
Meretrix (Callista) montensis Cossmann, 1908 † accepted as Callista montensis (Cossmann, 1908) † (original description)
Meretrix (Pitaria) duponti Cossmann, 1908 † accepted as Pitar duponti (Cossmann, 1908) † (original description)
Meretrix (Pitaria) rutoti Cossmann, 1908 † accepted as Pitar duponti rutoti (Cossmann, 1908) † (original description)
Miodon semen Cossmann, 1908 † accepted as Miodomeris semen (Cossmann, 1908) † (original description)
Modiolaria (Planimodiola) vincenti Cossmann, 1908 † accepted as Musculus vincenti (Cossmann, 1908) † (original description)
Mytilus montensis Cossmann, 1908 † accepted as Brachidontes montensis (Cossmann, 1908) † (original description)
Nucula montensis Cossmann, 19808 † (original description)
Nucula sinuatella Cossmann, 1908 † (original description)
Ostrea montensis Cossmann, 1908 † accepted as Liostrea montensis (Cossmann, 1908) † (original description)
Pectunculus duponti Cossmann, 1908 † accepted as Glycymeris duponti (Cossmann, 1908) † (original description)
Perna inaequistriata Cossmann, 1908 † accepted as Isognomon (Hippochaeta) inaequistriata (Cossmann, 1908) † (original description)
Phacoides (Cavilucina) duponti Cossmann, 1908 † accepted as Monitilora duponti (Cossmann, 1908) † (original description)
Phacoides (Cavilucina) lamellicardo Cossmann, 1908 † accepted as Prophetilora lamellocardo (Cossmann, 1908) † (original description)
Phacoides (Here) briarti Cossmann, 1908 † accepted as Barbierella briarti (Cossmann, 1908) † (original description)
Phacoides (Parvilucina) corneti Cossmann, 1908 † accepted as Callucina corneti (Cossmann, 1908) † (original description)
Phacoides (Parvilucina) nannus Cossmann, 1908 † accepted as Cavilinga nanna (Cossmann, 1908) † (original description)
Phacoides (Parvilucina) pireti Cossmann, 1908 † accepted as Eberzinella pireti (Cossmann, 1908) † (original description)
Phacoides (Recticardo) Cossmann, 1908 † accepted as Miltha (Recticardo) Cossmann, 1908 † accepted as Recticardo Cossmann, 1908 † (original description)
Phacoides (Recticardo) dolloi Cossmann, 1908 † accepted as Recticardo dolloi (Cossmann, 1908) † (original description)
Phacoides (Recticardo) rutoti Cossmann, 1908 † accepted as Recticardo rutoti (Cossmann, 1908) † (original description)
Phacoides montensis Cossmann, 1908 † accepted as Miltha montensis (Cossmann, 1908) † (original description)
Praerangia Cossmann, 1908 † (original description)
Praerangia minuscula Cossmann, 1908 † (original description)
Pseuderiphyla longidentata Cossmann, 1908 † accepted as Praerangia minuscula Cossmann, 1908 † (original description)
Pycnodonte houzeaui É. Vincent, 1930 † (additional source)
Scintilla (Spaniorinus) capillacea Cossmann, 1908 † accepted as Lasaeina capillacea (Cossmann, 1908) † (original description)
Sphenia duponti Cossmann, 1908 † (original description)
Sphenia excelsa Cossmann, 1908 † (original description)
Sphenia haudrugata Cossmann, 1908 † (original description)
Sportella subaequilateralis Cossmann, 1908 † (original description)
Tellina (Peronidia) montensis Cossmann, 1908 † accepted as Arcopagia montensis (Cossmann, 1908) † (original description)
Tellina briarti Cossmann, 1908 † accepted as Tellinella briarti (Cossmann, 1908) † (original description)
Trinacria distincta Cossmann, 1908 † (original description)
Unio subtruncatosus Cossmann, 1908 † (original description)
Venericardia duponti Cossmann, 1908 † accepted as Venericor duponti (Cossmann, 1908) † (original description)
Venericardia erugata Cossmann, 1908 † accepted as Venericor duponti (Cossmann, 1908) † (original description)
Venericardia rutoti Cossmann, 1908 † (original description)

Belgium for Corbis montensis Cossmann, 1908 † 
Belgium for Corbis transversaria Cossmann, 1908 † 
Belgium for Cyrena (Velorita) pireti Cossmann, 1908 † 
Belgium for Cyrena rutoti Cossmann, 1908 † 
Belgium for Diplodonta symmetrica Cossmann, 1908 † 
Belgium for Miodon semen Cossmann, 1908 † 
Belgium for Phacoides (Here) briarti Cossmann, 1908 † 
Belgium for Phacoides montensis Cossmann, 1908 † 
Belgium for Unio subtruncatosus Cossmann, 1908 †