- Author:
- Downie,C.;Booth,G.;Rasul,S.M.;Potter,T.L.
- Year:
- 1979
- Title:
- Changes in the acritarch assemblages at the Tremadoc boundaries in the United Kingdom.
- Reference:
- Downie,C. et al. (1979) Changes in the acritarch assemblages at the Tremadoc boundaries in the United Kingdom. Fourth International Palynology Conference, Lucknow, 1976-1977, Proceedings Vol. 2 P. 78- 83
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Peteinosphaeridium | Peteinosphaeridium | Wales | Arenigian | |
| Poikilofusa | Poikilofusa | Wales | Tremadocian | Arenigian |
| Polygonium | Polygonium | Wales | Tremadocian | Arenigian |
| Priscotheca | Priscotheca | Wales | Tremadocian | Merioneth |
| Protoleiosphaeridium | Protoleiosphaeridium | Wales | Tremadocian | Merioneth |
| Retisphaeridium | Retisphaeridium | Wales | Late Merioneth | |
| Saharidia | Saharidia | Wales | Tremadocian | Arenigian |
| Schizodiacrodium | Schizodiacrodium | Wales | Tremadocian | Arenigian |
| Stelliferidium | Stelliferidium | Wales | Late Cambrian | Arenigian |
| Striatotheca | Striatotheca | Wales | Arenigian | |
| Symplassosphaeridium | Symplassosphaeridium | Wales | Late Merioneth | |
| Synsphaeridium | Synsphaeridium | Wales | Merioneth | Middle Tremadocian |
| Tectitheca | Tectitheca | Wales | Tremadocian | Arenigian |
| Timofeevia | Timofeevia | Wales | Tremadocian | Merioneth |
| Trachydiacrodium | Trachydiacrodium | Wales | Tremadocian | Arenigian |
| Veryhachium | Veryhachium | Wales | Late Cambrian | Arenigian |
| Vulcanisphaera | Vulcanisphaera | Wales | Late Cambrian | Arenigian |