| original |
Late Ordovician |
|
Indiana |
Tappan,H. et al. Surface sculpture of the wall in Lower Paleozoic acritarchs. |
1971 |
| details |
Late Ordovician |
|
Indiana |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1976 |
| details |
Late Caradocian |
|
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 |
Late Ordovician |
|
Indiana |
Colbath,G.K. Organic-walled microphytoplankton from the Eden Shale, (Upper Ordovician), Indiana, USA. |
1979 |
| details |
Early Paleozoic |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Late Ordovician |
|
Indiana |
Tappan,H. The Paleobiology of Plant Protists. |
1980 |
| details |
Late Ashgillian |
|
Czechoslovakia |
VavrdovЎ,M. Recycled acritarchs in the Uppermost Ordovician of Bohemia |
1982 |
| details |
Late Champlainian |
Early Cincinnatian |
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Late Caradocian |
|
United Kingdom |
Downie,C. Acritarchs in British stratigraphy |
1984 |
| details |
Late Onnian |
|
England(Shropshire) |
Turner,R.E. Acritarchs from the type area of the Ordovician Caradoc Series, Shropshire, England. |
1984 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Further acritarchs and terrestrial plant remains from the Late Orovician at Hlasna Treban (Czechoslovakia) |
1988 |
| details |
Nd |
|
Nd |
VavrdovЎ,M. New acritarchs and miospores from the Late Ordovician of Hlasna Treban, Czechoslovakia. |
1989 |
| details |
Caradocian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Caradocian |
|
England |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Late Onnian |
|
Worldwide |
Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |