| details |
Late Precambrian |
|
India(Uttar Pradesh) |
Nautiyal,A.C. The organic remains of the Garhwal Himalayan Argillaceous Sequence, (Late Precambrian). |
1979 |
| details |
Ordovician |
|
Sweden |
Grahn,Y. et al. On the affinity of chitinozoa. |
1980 |
| original |
Late Ordovician |
|
Ohio |
Miller,M.A. Paleocological significance of chitinozoan recurrent species associations, (Upper Ordovician), Cincinnati Regon, USA. |
1980 |
| original |
Late Ordovician |
|
Kentucky |
Miller,M.A. Paleocological significance of chitinozoan recurrent species associations, (Upper Ordovician), Cincinnati Regon, USA. |
1980 |
| original |
Late Ordovician |
|
Indiana |
Miller,M.A. Paleocological significance of chitinozoan recurrent species associations, (Upper Ordovician), Cincinnati Regon, USA. |
1980 |
| details |
Early Paleozoic |
|
Poland |
Wrona,R.M. Microarchitecture of the chitinozoan vesicles and its paleobiological significance. |
1980 |
| details |
Caradocian |
Ashgillian |
Canada(Quebec) |
Martin,F. Some Upper Ordovician chitinozoans and acritarchs from the White Head Formation of Gaspe, Quebec. Gaspesie, Quebec. |
1980 |
| details |
Ordovician |
|
Sweden |
Grahn,Y. et al. Ultrastructural studies of some chitinozoan vesicles. |
1980 |
| details |
Late Caradocian |
|
USSR(Ukrainian SSR) |
Tsegelnyuk,P.D. Ordovician stratigraphy of the Southwestern Region of the Russian Platform |
1980 |
| details |
Ashgillian |
|
USSR(Ukrainian SSR) |
Tsegelnyuk,P.D. Ordovician stratigraphy of the Southwestern Region of the Russian Platform |
1980 |
| details |
Late Caradocian |
Ashgillian |
Baltic |
Nolvak,J. Chitinozoans in biostratigraphy of the northern East Baltic Ashgillian, a preliminary report |
1980 |
| details |
Late Llanvirnian |
Early Caradocian |
Poland |
Podhalaбska,T Stratigraphy and facial development of Middle and Upper Ordovician deposits in the Leba Elevation (northwest Poland). |
1980 |
| details |
Late Ordovician |
|
Kansas |
Wright,R.P. et al. Organic-walled microplankton in the subsurface Ordovician of Northeastern Kansas. |
1981 |
| details |
Llanvirnian |
Ashgillian |
Europe |
Paris,F. The chitinozoans in the Paleozoic of Southwest Europe. |
1981 |
| details |
Late Llanvirnian |
Early Llandeilian |
Europe |
Paris,F. The chitinozoans in the Paleozoic of Southwest Europe. |
1981 |
| 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 |