- Author:
- Kalvacheva,R.K.
- Year:
- 1984
- Title:
- Acritarch evidence for Ordovician System in West Bulgaria
- Reference:
- Kalvacheva,R.K. (1984) Acritarch evidence for Ordovician System in West Bulgaria Mezhdunarodnyi Geologicheskii Kongress,27th Session,Moskva,Abstracts Vol. 1 # 1 P. 72- 72
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Veryhachium | Veryhachium fakirum | Bulgaria | Caradocian | |
| Veryhachium | Veryhachium irroratum | Bulgaria | Caradocian | |
| Veryhachium | Veryhachium lairdii | Bulgaria | Late Arenigian | Caradocian |
| Veryhachium | Veryhachium minutum | Bulgaria | Late Arenigian | Caradocian |
| Veryhachium | Veryhachium sartbernardense | Bulgaria | Late Llanvirnian | Llandeilian |
| Veryhachium | Veryhachium trispinosum | Bulgaria | Late Llanvirnian | Caradocian |
| Veryhachium | Veryhachium valiente | Bulgaria | Late Llanvirnian | Llandeilian |