| original |
Ashgillian |
|
USSR(Baltic) |
Eisenack,A. Tasmanites, Newton,1875, and Leiosphaeridia, nov.gen., as genera of the Hystrichosphaerideae. |
1958 |
| details |
Late Llandoverian |
Early Wenlockian |
Lithuania |
Yankauskas,T.V. et al. Upper Llandoverian and Lower Wenlockian acritarch assemblages from the Ledai-179 boring in Lithuania. |
2004 |
| details |
Ordovician |
|
Baltic |
Sheshegova,L.I. The acritarchs of the Paleozoic. |
1971 |
| details |
Llandeilian |
Caradocian |
Germany |
Jenkins,W.A.M. Ordovician chitinozoa from Shropshire. |
1967 |
| details |
Ordovician |
|
Baltic |
Norris,G. et al. A descriptive index of genera of fossil Dinophyceae and acritarcha. |
1965 |
| details |
Ordovician |
|
E.Germany(Potsdam) |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Caradocian |
|
Finland |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Early Ordovician |
Middle Ordovician |
Sweden |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Ordovician |
|
E.Germany(Potsdam) |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Ordovician |
|
Baltic |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Precambriam |
|
USSR |
Yankauskas,T.V. et al. Fifth All-Union Colloquium on Precambrian microfossils of the USSR |
1987 |
| details |
Ashgillian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Proterozoic |
|
China(Inner Mongolia) |
Sun,S. et al. Palaeoproterozoic eucaryotic fossils from north China. |
2000 |
| details |
Nd |
|
Nd |
Servais,T. Some considerations on acritarch classification |
1996 |
| details |
Volkhov |
Aseri |
Estonia |
Magi,S. Locality 4:2 Cntika Clint |
1990 |
| details |
Scythian |
|
USSR(Moldavian SSR) |
Vaida,M. et al. Palynological study of cores from the borehole 1 Liman (Scythia Platform, Moldavia) |
1997 |
| details |
Ordovician |
|
USSR(Estonian SSR) |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |