- Author:
- Volkova,N.A.
- Year:
- 1997
- Title:
- Paleogeography of phytoplankton at Cambrian-Ordovician boundary
- Reference:
- Volkova,N.A. (1997) Paleogeography of phytoplankton at Cambrian-Ordovician boundary Paleontologicheskii Zhurnal (Paleontological Journal) Vol. 1997 # 2 P. 13- 19
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Vulcanisphaera | Vulcanisphaera imparilis | Iran | Early Tremadocian | |
| Vulcanisphaera | Vulcanisphaera imparilis | Africa(N.Africa) | Early Tremadocian | |
| Vulcanisphaera | Vulcanisphaera imparilis | Argentina | Early Tremadocian |