Genus
Petraia Münster, 1839
| Images | ||||||
|---|---|---|---|---|---|---|
| TUG 1368-66 | Petraia expansa | Petraia expansa Hall, 1852 | Nabala Stage | ? | ||||
| GIT 406-161 | Vormsi Stage | |||||
| GIT 406-171 | Petraia inflata | Petraia inflata Dybowski, 1873 non depicta | |||||
| GIT 406-172 | Petraia inflata | Petraia inflata Dybowski, 1873 non depicta | |||||
| GIT 406-684 | Kopliranna | Nabala Stage |