- Author:
- Naumova,S.N.
- Year:
- 1962
- Title:
- Lower Paleozoic and Precambrian flora.
- Reference:
- Naumova,S.N. (1962) Lower Paleozoic and Precambrian flora. Pollen et Spores Vol. 4 # 2 P. 366- 367
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Ullmannia | Ullmannia | USSR(Siberia) | Early Cambrian | Ordovician |