Genus
Pentagona Schallreuter, 1964
| Images | ||||||
|---|---|---|---|---|---|---|
| GIT 138-13 | Pentagona joehviensis | Sigmobolbina prominesca var. joehviensis Sarv, 1959 | Idavere Substage | holotype | |||
| TUG 1610-75 | Pentagona pentagona | Pentagona pentagona | Keila Stage | DII | ||||
| GIT 270-123 | Pentagona pentagona | Pentagona pentagona (Jaanusson, 1957) | 130 | Rakvere Stage | |||
| GIT 270-124 | Pentagona pentagona | Pentagona pentagona (Jaanusson, 1957) | 130 | Rakvere Stage | |||
| GIT 844-10 | Pentagona pentagona | =Sigmobolbina prominens | Idavere Substage |