Pecten acuteplicatus Alth, 1850 † accepted as Dhondtichlamys acuteplicata (Alth, 1850) † (original description)
Pecten besseri Alth, 1850 † accepted as Camptonectes virgatus (Nilsson, 1827) † (original description)
Pecten leopoliensis Alth, 1850 † accepted as Dhondtichlamys acuteplicata (Alth, 1850) † (original description)
Pecten pusillus Alth, 1850 † accepted as Syncyclonema haggi Dhondt, 1971 † (original description)
Pecten semiplicatus Alth, 1850 † accepted as Syncyclonema semiplicata (Alth, 1850) † (original description)
Pecten staszycii Alth, 1850 † accepted as Dhondtichlamys pulchella (Nilsson, 1827) † (original description)
Pecten zeiszneri Alth, 1850 † accepted as Mimachlamys cretosa (Defrance, 1822) † (original description)
Volvaria cretacea Alth, 1850 † (original description)

Ukraine for Pecten acuteplicatus Alth, 1850 † 
Ukraine for Pecten besseri Alth, 1850 † 
Ukraine for Pecten leopoliensis Alth, 1850 † 
Ukraine for Pecten pusillus Alth, 1850 † 
Ukraine for Pecten semiplicatus Alth, 1850 † 
Ukraine for Pecten staszycii Alth, 1850 † 
Ukraine for Pecten zeiszneri Alth, 1850 † 
Ukraine for Volvaria cretacea Alth, 1850 †