Subgenus

Platybolbina (Platybolbina) Henningsmoen, 1953


GIT 139-5	Platybolbina (Platybolbina) elongata	Iida karst forms	Porkuni Stage
GIT 139-6	Platybolbina (Platybolbina) elongata	Porkuni quarry	Porkuni Stage
GIT 139-7	Platybolbina (Platybolbina) elongata	Siuge quarry	Porkuni Stage
GIT 139-8	Platybolbina (Platybolbina) elongata	Porkuni quarry	Porkuni Stage