| original |
Late Arenigian |
Early Llanvirnian |
Germany |
Burmann,G. Diacrodia of the Lower Ordovician |
1968 |
| details |
Late Arenigian |
Early Llanvirnian |
E.Germany |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Early Arenigian |
|
United Kingdom |
Downie,C. Acritarchs in British stratigraphy |
1984 |
| details |
Late Arenigian |
Early Llanvirnian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Arenigian |
Llanvirnian |
Germany |
Wang,W.-M. Paleofloristic and paleoclimatic implications of Neogene palynofloras in China |
1994 |
| details |
Arenigian |
Llanvirnian |
Czech Republic |
Wang,W.-M. Paleofloristic and paleoclimatic implications of Neogene palynofloras in China |
1994 |
| details |
Arenigian |
Llanvirnian |
England(Cumberland) |
Wang,W.-M. Paleofloristic and paleoclimatic implications of Neogene palynofloras in China |
1994 |
| details |
Arenigian |
Llanvirnian |
Baltic |
Wang,W.-M. Paleofloristic and paleoclimatic implications of Neogene palynofloras in China |
1994 |