- Author:
- Tynni,R.
- Year:
- 1975
- Title:
- Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea.
- Reference:
- Tynni,R. (1975) Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea. Geological Survey of Finland, Bulletin # 279 P. 5- 59
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Tasmanites | Tasmanites minutus | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium europaeum | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium lairdii | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium oligospinosum | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium triangulatum | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium trispinosum | Finland | Middle Ordovician | |
| Veryhachium | Veryhachium trisulcum | Finland | Middle Ordovician |