Actaeon (Bulimactaeon) Cossmann, 1892 † accepted as Bulimactaeon Cossmann, 1892 † (original description)
Actaeon (Bulimactaeon) bernayi Cossmann, 1892 † accepted as Bulimactaeon bernayi (Cossmann, 1892) † (original description)
Adeorbis diaphanes Cossmann, 1892 † accepted as Cochliolepis diaphanes (Cossmann, 1892) † (original description)
Adeorbis trochilia Cossmann, 1892 † accepted as Cyclostremiscus trochilia (Cossmann, 1892) † (original description)
Ampullina chenayensis Cossmann, 1892 † (original description)
Asaphinella amygdalina Cossmann, 1892 † (original description)
Axinaea bezanconi Cossmann, 1892 † accepted as Glycymeris bezanconi (Cossmann, 1892) † (original description)
Bayania lirata Cossmann, 1892 † accepted as Bittium liratum (Cossmann, 1892) † (original description)
Cancellaria cloezi Cossmann, 1892 † accepted as Unitas cloezi (Cossmann, 1892) † (original description)
Ceratia diaphanes Cossmann, 1892 † (original description)
Chevallieria resecta Cossmann, 1892 † (original description)
Collonia miliaris Cossmann, 1892 † accepted as Eutinochilus miliaris (Cossmann, 1892) † (original description)
Crassatella praecurata Cossmann, 1892 † accepted as Bathytormus praecuratus (Cossmann, 1892) † (original description)
Eucyclus infraeocaenicus Cossmann, 1892 † accepted as Clanculus infraeocaenicus (Cossmann, 1892) † (original description)
Fissurella bouryi Cossmann, 1892 † accepted as Diodora bouryi (Cossmann, 1892) † (original description)
Helix stueri Cossmann, 1892 † accepted as Acanthinula stueri (Cossmann, 1892) † (original description)
Herouvalia Cossmann, 1892 (original description)
Lacunodon bidens Cossmann, 1892 † accepted as Laeviselica bidens (Cossmann, 1892) † (original description)
Lepton irradiatum Cossmann, 1892 † accepted as Erycina irradiata (Cossmann, 1892) † (original description)
Leptopoma morleti Cossmann, 1892 † (original description)
Marginella eurychilus Cossmann, 1892 † accepted as Volvarina eurychilus (Cossmann, 1892) † (original description)
Mathildia bacillaris Cossmann, 1892 † accepted as Promathildia bacillaris (Cossmann, 1892) † (original description)
Mitra chevallieri Cossmann, 1892 † accepted as Dentimitra chevallieri (Cossmann, 1892) † (original description)
Mitra godini Cossmann, 1892 † accepted as Conomitra godini (Cossmann, 1892) † (original description)
Modiola amaura Cossmann, 1892 † accepted as Modiolus amaurus Cossmann, 1892 † (original description)
Modiola compsa Cossmann, 1892 † accepted as Brachidontes compsus (Cossmann, 1892) † (original description)
Modiolus amaurus Cossmann, 1892 † (original description)
Norrisia anaulax Cossmann, 1892 † accepted as Norrisella anaulax (Cossmann, 1892) † (original description)
Paludomus infraeocaenicus Cossmann, 1892 † accepted as Paludomus infraeocaenica Cossmann, 1892 † (original description)
Parvicorbis Cossmann, 1892 † (original description)
Parvicorbis tellinopsis Cossmann, 1892 † (original description)
Rissoina houdasi Cossmann, 1892 † (original description)
Scintilla primaeva Cossmann, 1892 † accepted as Spaniorinus primaevus (Cossmann, 1892) † (original description)
Scrobicularia ovoides Cossmann, 1892 † accepted as Septeuilia ovoides (Cossmann, 1892) † (original description)
Sipho pezanti Cossmann, 1892 † accepted as Coptosipho pezanti (Cossmann, 1892) † (original description)
Siphonaria liancurtensis Cossmann, 1892 † (original description)
Sphenia leptomorpha Cossmann, 1892 † (original description)
Velutina pezanti Cossmann, 1892 † (original description)
Venus bouryi Cossmann, 1892 † accepted as Venerella bouryi (Cossmann, 1892) † (original description)

France for Adeorbis diaphanes Cossmann, 1892 † 
France for Adeorbis trochilia Cossmann, 1892 † 
France for Ampullina chenayensis Cossmann, 1892 † 
France for Asaphinella amygdalina Cossmann, 1892 † 
France for Axinaea bezanconi Cossmann, 1892 † 
France for Bayania lirata Cossmann, 1892 † 
France for Cancellaria cloezi Cossmann, 1892 † 
France for Ceratia diaphanes Cossmann, 1892 † 
France for Chevallieria resecta Cossmann, 1892 † 
France for Collonia miliaris Cossmann, 1892 † 
France for Crassatella praecurata Cossmann, 1892 † 
France for Eucyclus infraeocaenicus Cossmann, 1892 † 
France for Fissurella bouryi Cossmann, 1892 † 
France for Helix stueri Cossmann, 1892 † 
France for Helix stueri Cossmann, 1892 † 
France for Lacunodon bidens Cossmann, 1892 † 
France for Lepton irradiatum Cossmann, 1892 † 
France for Leptopoma morleti Cossmann, 1892 † 
France for Marginella eurychilus Cossmann, 1892 † 
France for Mathildia bacillaris Cossmann, 1892 † 
France for Mitra chevallieri Cossmann, 1892 † 
France for Mitra godini Cossmann, 1892 † 
France for Modiola amaura Cossmann, 1892 † 
France for Modiola compsa Cossmann, 1892 † 
France for Norrisia anaulax Cossmann, 1892 † 
France for Paludomus infraeocaenicus Cossmann, 1892 † 
France for Parvicorbis tellinopsis Cossmann, 1892 † 
France for Scintilla primaeva Cossmann, 1892 † 
France for Scrobicularia ovoides Cossmann, 1892 † 
France for Sipho pezanti Cossmann, 1892 † 
France for Sphenia leptomorpha Cossmann, 1892 † 
France for Velutina pezanti Cossmann, 1892 † 
France for Venus bouryi Cossmann, 1892 † 

 Type locality

 for Helix stueri Cossmann, 1892 †

Neauphlette, Yvelines (Lutetian, middle Eocene) and Guépelle near Saint-Witz, Val-d'Oise (early Bartonian, late ... [details]

 Type locality

 for Leptopoma morleti Cossmann, 1892 †

Jonchery-sur-Vesles, Marne, France; Sables de Bracheux, late Thanetian, late Paleocene [details]

 Type locality

 for Paludomus infraeocaenicus Cossmann, 1892 †

Chenay, Marne, France; Sables de Bracheux, late Thanetian, late Paleocene [details]