| original |
Ludlovian |
Siegenian |
Spain |
Cramer,F.H. Microplankton from three Palaeozoic formations in the Province of Leon, northwest Spain. |
1964 |
| details |
Wenlockian |
Ludlovian |
England(Shropshire) |
Lister,T.R. The acritarchs and chitinozoa from the Wenlockian and Ludlowvian series of the Ludlovian and Millichope areas, Shrophire. |
1970 |
| details |
Wenlockian |
Early Eltonian |
England(Shropshire) |
Lister,T.R. et al. The stratigraphic distribution of the acritarchs in the Ludlow succession at Ludlow. |
1974 |
| details |
Ashgillian |
Llandoverian |
USSR(Russian Platform) |
Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic |
1975 |
| details |
Wenlockian |
|
USSR(Tuvinskaya A.O.) |
Sheshegova,L.I. Phytoplankton of the Silurian from the Tuva, (the section of the "Elegest"). |
1975 |
| details |
Late Gothlandian |
|
USSR(Estonian SSR) |
Aristova,K.E. et al. Microfossils of stratigraphic type sections from the Upper Silurian of Estonia. |
1976 |
| details |
Ludlovian |
Siegenian |
Spain |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Middle Ludlovian |
Gedinnian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. 2: Index to Parts 1 and 2. |
1977 |
| details |
Ludlovian |
|
USSR(Ukrainian SSR) |
Kiryanov,V.V. Silurian acritarchs of Volhynia and Podolia |
1978 |
| details |
Late Llandoverian |
Wenlockian |
USSR(Krasnoyarsk Kray) |
Sheshegova,L.I. The acritarchs of the Silurian of the northern Siberian Platform |
1984 |
| details |
Middle Llandoverian |
|
USSR(Orenburg) |
Talnov,E.S et al. Lower Silurian sediments of the Allochthonous complex in the Southern Part of the East Urals Meganticlinorium |
1987 |
| details |
Nd |
|
Nd |
Le H©riss©,A. Acritarchs and cysts of Prasinophycean algae of the Silurian of Gotland, Sweden. |
1989 |
| details |
Ludlovian |
Siegenian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Ashgillian |
|
USSR(Estonian SSR) |
Uutela,A. et al. Ordovician acritarchs from the Rapla borehole, Estonia |
1991 |