Actaeon houdasi Cossmann, 1907 † accepted as Acteon houdasi (Cossmann, 1907) † (original description)
Actaeonidea pourcyensis Cossmann, 1907 † accepted as Crenilabium pourcyense (Cossmann, 1907) † (original description)
Adeorbis bonneti Cossmann, 1907 † accepted as Circulus bonneti (Cossmann, 1907) † (original description)
Amphisphyra moloti Cossmann, 1907 † accepted as Diaphana moloti (Cossmann, 1907) † (original description)
Ampullina pistati Cossmann, 1907 † (original description)
Arcopagia herouvalensis Cossmann, 1907 † (original description)
Assiminea elatior Cossmann, 1907 † accepted as Lapparentia elatior (Cossmann, 1907) † (original description)
Berellaia allixi Cossmann, 1907 † (original description)
Berellaia bonneti Cossmann, 1907 † (original description)
Bithinia pistati Cossmann, 1907 † accepted as Pseudamnicola pistati (Cossmann, 1907) † (original description)
Bonnetia Cossmann, 1907 † accepted as Bonnetella Cossmann, 1918 † (original description)
Bonnetia planispira Cossmann, 1907 † accepted as Bonnetella planispira (Cossmann, 1907) † (original description)
Bulimus bonneti Cossmann, 1907 † (original description)
Bulimus guillaumei Cossmann, 1907 † (original description)
Bullinella lignitarum Cossmann, 1907 † accepted as Cylichna lignitarum (Cossmann, 1907) † (original description)
Cerithiopsis veslensis Cossmann, 1907 † (original description)
Chevallieria cylindroides Cossmann, 1907 † (original description)
Clavilithes lemarchandi Cossmann, 1907 † accepted as Cosmolithes lemarchandi (Cossmann, 1907) † (original description)
Conomitra eurycolpa Cossmann, 1907 † (original description)
Cornetia remiensis Cossmann, 1907 † (original description)
Craspedopoma bonnetae Cossmann, 1907 † (original description)
Dissostoma veslense Cossmann, 1907 † (original description)
Eocrassina veneriformis Cossmann, 1907 † (original description)
Eulima suturalis Cossmann, 1907 † accepted as Margineulima suturalis (Cossmann, 1907) † (original description)
Fissurella cossmanni Cossmann, 1907 † accepted as Diodora cossmanni (Cossmann, 1907) † (original description)
Glandina bonneti Cossmann, 1907 † accepted as Palaeoglandina bonneti (Cossmann, 1907) † (original description)
Hartmannia moloti Cossmann, 1907 † accepted as Cochlostoma moloti (Cossmann, 1907) † (original description)
Helix (Grandipatula) allixi Cossmann, 1907 † accepted as Grandipatula allixi (Cossmann, 1907) † (original description)
Helix diarti Cossmann, 1907 † accepted as Coneulota diarti (Cossmann, 1907) † (original description)
Hemisinus hermanni (Le Renard, 1994) † (additional source)
Lacuna staadti Cossmann, 1907 † accepted as Pseudocirsope staadti (Cossmann, 1907) † (original description)
Lamellaria inopinata Cossmann, 1907 † (original description)
Litiopa alnensis Cossmann, 1907 † (original description)
Littorina guillaumei Cossmann, 1907 † accepted as Littoraria guillaumei (Cossmann, 1907) † (original description)
Littorina mausseneti Cossmann, 1907 † accepted as Melarhaphe mausseneti (Cossmann, 1907) † (original description)
Melanopsis (Coptostylus) pourcyensis Cossmann, 1907 † accepted as Coptostylus pourcyensis (Cossmann, 1907) † (original description)
Mitra pezanti Cossmann, 1907 † accepted as Mitreola pezanti (Cossmann, 1907) † (original description)
Monodonta staadti Cossmann, 1907 † accepted as Phorcus staadti (Cossmann, 1907) † (original description)
Murex plateaui Cossmann, 1907 † accepted as Flexopteron plateaui (Cossmann, 1907) † (original description)
Partula dautzenbergi Cossmann, 1907 † accepted as Procerastus dautzenbergi (Cossmann, 1907) † (original description)
Perna staadti Cossmann, 1907 † accepted as Isognomon staadti (Cossmann, 1907) † (original description)
Planaxis (Orthochilus) breviculus Cossmann, 1907 † accepted as Hemisinus hermanni (Le Renard, 1994) † (original description)
Plicatula pustulosa Cossmann, 1907 † (original description)
Pseudotaphrus moloti Cossmann, 1907 † (original description)
Pseudotoma pluriplicata (Cossmann, 1902) † (basis of record)
Pulsellum infraeocaenicum Cossmann, 1907 † accepted as Compressidens infraeocaenicus (Cossmann, 1907) † (original description)
Pupa bonneti Cossmann, 1907 † accepted as Albinulopsis bonneti (Cossmann, 1907) † (original description)
Pyrgulifera inopinata Cossmann, 1907 † accepted as Cornetia inopinata (Cossmann, 1907) † (original description)
Rhinoclavis staadti Cossmann, 1907 † (original description)
Rillya bonneti Cossmann, 1907 † (original description)
Rimula bonneti Cossmann, 1907 † (original description)
Rissoa veslensis Cossmann, 1907 † accepted as Lapparentia veslensis (Cossmann, 1907) † (original description)
Rissoina paludinaeformis (Deshayes, 1861) † (basis of record)
Rissoina plicatilis Deshayes, 1861 † (additional source)
Rotellorbis nincki Cossmann, 1907 † (original description)
Scaliola joncheryensis Cossmann, 1907 † (original description)
Semisinus pistati Cossmann, 1907 † accepted as Hemisinus pistati Cossmann, 1907 † (original description)
Siphonaria paucidigitata Cossmann, 1907 † (original description)
Solarium staadti Cossmann, 1907 † accepted as Pseudotorinia staadti (Cossmann, 1907) † (original description)
Stenothyra bonneti Cossmann, 1907 † accepted as Costhyrella microscopica (Cossmann, 1883) † (original description)
Stolidoma pistati Cossmann, 1907 † (original description)
Syrnola asthenoptyxis Cossmann, 1907 † accepted as Macrodostomia asthenoptyxis (Cossmann, 1907) † (original description)
Syrnola houdasi Cossmann, 1907 † (original description)
Triphora staadti Cossmann, 1907 † (original description)
Tuba elatospira Cossmann, 1907 † accepted as Pseudotuba elatospira (Cossmann, 1907) † (original description)
Vermetus staadti Cossmann, 1907 † accepted as Vermicularia staadti (Cossmann, 1907) † (original description)
Zua allixi Cossmann, 1907 † accepted as Cochlicopa allixi (Cossmann, 1907) † (original description)