Orygmatosphaeridium spumosum
- Citations total:
- 2
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| details | Late Vendian | USSR(Permsk Oblast) | Lagutenkova,N.S. et al. New data on Old rocks in the Yaborovskaya area in the northeastern part of the Perm Oblast | 1977 | |
| details | Late Vendian | USSR(Permsk Oblast) | Lagutenkova,N.S. et al. Separation of Lower Paleozoic deposits in the northeastern Perm District. (In: Voprosy biostratigrafii i Paleogeografii Neftegazonosnykh Oblastei SSSR.) | 1977 |