- Author:
- Uutela,A.;Sarjeant,W.A.S.
- Year:
- 2000
- Title:
- The Ordovician acritarch genera Tranvikium and Ampullula their relationship and taxonomy.
- Reference:
- Uutela,A. et al. (2000) The Ordovician acritarch genera Tranvikium and Ampullula their relationship and taxonomy. Review of Palaeobotany and Palynology Vol. 112 # 3 P. 23- 38
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Ampullula | Ampullula erchunensis | Nd | Nd | |
| Ampullula | Ampullula princeps | China(Szechwan) | Late Arenigian | |
| Ampullula | Ampullula suetica | Nd | Nd | |
| Stelomorpha | Stelomorpha | China(Hupei) | Early Ordovician | |
| Stelomorpha | Stelomorpha erchunensis | China(Hupei) | Early Ordovician | |
| Stelomorpha | Stelomorpha princeps | China(Szechwan) | Late Arenigian | |
| Tranvikium | Tranvikium | Finland | Middle Ordovician | |
| Tranvikium | Tranvikium polygonale | Finland | Middle Ordovician |