| details |
Ludlovian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Ordovician |
|
USSR(Russian Platform) |
Andreeva,E.M. Guide complexes of plant microfossils of the Upper Proterozoic and lower deposits of the Russian Platform. (In: Palynology, Method and Stratigraphy) |
1973 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Ludlovian |
|
Spain |
Andreeva,E.M. Guide complexes of plant microfossils of the Upper Proterozoic and lower deposits of the Russian Platform. (In: Palynology, Method and Stratigraphy) |
1973 |