| original |
Late Gothlandian |
|
USSR(Belorussian SSR) |
Piskun,L.V. Palaeontologic characteristics of Silurian deposits of the Brest Depression. (In: Microfossils USSR. T.F.Vozzhennikova et al, editors) |
1974 |
| details |
Late Ordovician |
|
USSR(Belorussian SSR) |
Piskun,L.V. New species of acritarchs from the Ordovician and Silurian deposits of the Brestskaya Basin. (In: New species of Fossils and Plants of Belorussia. G.I. Goretskii, editor) |
1976 |
| details |
Silurian |
|
USSR(Buryat ASSR) |
Butov,Y.P. Certain problems of Pre-Mesozoic stratigraphy of the Sayan-Baikal Mountain Area. 1: Crysis of traditional stratigraphy. |
1985 |
| details |
Wenlockian |
Ludlovian |
Poland |
Jachowicz,M. et al. Acritarcha of Silurian formations from Myszrow area. |
1987 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |