Perisaccus anticus
- Citations total:
- 2
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| original | Early Gothlandian | USSR(Leningrad) | Naumova,S.N. Spores of the Lower Silurian. | 1950 | |
| original | Early Gothlandian | USSR(Estonian SSR) | Naumova,S.N. Spores of the Lower Silurian. | 1950 |