| details |
Ordovician |
|
Libya |
Combaz,A. Kerogen under a microscope |
1980 |
| details |
Silurian |
|
USSR(Siberia) |
Tesakov,Y.I. Key Beds of the Silurian of the Gorbiachin River Region. (In: Silur Sibirskoy Platformy;Opornyve Razezy Severo-Zapada Sibirskoy Platformy. B.S.Sokolov et al, editor) |
1980 |
| details |
Late Ordovician |
|
Belgium |
Verniers,J. The Silurian of the Mehaigne Valley, (Brabant Massif, Belgium) |
1981 |
| details |
Middle Ordovician |
Late Ordovician |
S.Ireland(Mayo) |
Graham,J.R. et al. The age and significance of a small Lower Palaeozoic Inlier in County Mayo. |
1981 |
| details |
Late Ludlovian |
|
Romania |
Iliescu,V. et al. Some chitinozoa from the Silurian of the Moldavian Platform, (Roumania). |
1981 |
| details |
Late Arenigian |
Early Llanvirnian |
England(Cumberland) |
Arthurton,R.S. et al. Ordovician and Silurian. (In: Geology of the Country around Penrith.) |
1981 |
| details |
Ordovician |
|
Belgium |
Verniers,J. The Silurian chitinozoa of the Mehaigne area (Brabant Massif, Belgium). |
1982 |
| details |
|
|
Belgium |
Verniers,J. The Silurian chitinozoa of the Mehaigne area (Brabant Massif, Belgium). |
1982 |
| details |
Ordovician |
Silurian |
India(Himachal Pradesh) |
Mehrotra,P.C. et al. Chitinozoa from Lower Paleozoic sequence of Spiti, Himachal Pradesh, India. |
1982 |
| details |
Ordovician |
Silurian |
India(Himachal Pradesh) |
Mehrotra,P.C. et al. Chitinozoa from Lower Paleozoic sequence of Spiti, Himachal Pradesh, India. |
1982 |
| details |
Ordovician |
Silurian |
India(Himachal Pradesh) |
Mehrotra,P.C. et al. Chitinozoa from Lower Paleozoic sequence of Spiti, Himachal Pradesh, India. |
1982 |
| details |
Ordovician |
Silurian |
India(Himachal Pradesh) |
Mehrotra,P.C. et al. Chitinozoa from Lower Paleozoic sequence of Spiti, Himachal Pradesh, India. |
1982 |
| details |
Ordovician |
Silurian |
India(Himachal Pradesh) |
Mehrotra,P.C. et al. Chitinozoa from Lower Paleozoic sequence of Spiti, Himachal Pradesh, India. |
1982 |
| details |
Ashgillian |
|
China(Szechwan) |
Hou,J.-P. et al. Chitinozoan biostratigraphy in China |
1982 |
| details |
Llandoverian |
|
China(Hopei) |
Hou,J.-P. et al. Chitinozoan biostratigraphy in China |
1982 |
| original |
Gedinnian |
|
Brazil(Piaui) |
de Quadros,L.P. Biostratigraphic distribution of chitinozoa and acritarchs of the Parnaiba Basin |
1982 |
| details |
Silurian |
|
China |
Gao,L. Silurian chitinozoa. (In: Palaeontological Atlas of Southwest China, Volume of Microfossils. Edited by Chengdu Institute of Geology and Mineral Resources.) |
1983 |