| original |
Middle Ordovician |
|
Oklahoma |
Loeblich,A.R.,Jr. et al. Acritarch excystment and surface ultrastructure with descriptions of some Ordovician taxa. |
1969 |
| details |
Middle Ordovician |
|
Oklahoma |
Loeblich,A.R.III Morphology, ultrastructure and distribution of Paleozoic acritarchs. |
1970 |
| details |
Middle Ordovician |
|
Oklahoma |
Loeblich,A.R.,Jr. et al. Observations on the ultrastructure of Asketopalla, an Ordovician acritarch |
1971 |
| details |
Middle Ordovician |
|
Oklahoma |
Eisenack,A. et al. Catalog of fossil dinoflagellates, hystrichospheres and related microfossils. Acritarchs. |
1973 |
| details |
Llanvirnian |
Llandeilian |
Nd |
Diez,M.D.C.R. et al. Range chart of selected Lower Paleozoic acritarch Taxa. |
1974 |
| details |
Nd |
|
Nd |
Eisenack,A. Contribution to acritarch research. |
1974 |
| details |
Early Paleozoic |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Middle Ordovician |
|
Oklahoma |
Tappan,H. The Paleobiology of Plant Protists. |
1980 |
| details |
Llanvirnian |
Late Llandeilian |
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Tremadocian |
|
China(Shanghai) |
Hu,Y. Micropalaeoflora from the Early Ordovician in Gaoqiao Region of Shaanxi and its stratigraphic significance. |
1986 |
| details |
Early Arenigian |
|
Jordan |
Basha,S.H. Acritarchs from Ordovician rocks in Southern Jordan |
1987 |
| details |
Late Ordovician |
|
Czechoslovakia |
VavrdovЎ,M. Further acritarchs and terrestrial plant remains from the Late Orovician at Hlasna Treban (Czechoslovakia) |
1988 |
| details |
Llandeilian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Arenigian |
|
Austria |
Reitz,E. et al. Palynological evidence for Lower Ordovician rocks (Tremadoc and Arenig) in the northern Greywacke zone (Eastern Alps) |
1992 |