| details |
Ludlovian |
Downtonian |
Libya |
Richardson,J.B. et al. Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. |
1981 |
| details |
Late Ordovician |
Early Gothlandian |
Canada(Anticosti Island) |
Achab,A. Biostratigraphy of the chitinozoa of Upper Ordovician - Lower Silurian of Anticosti Island. Preliminary results. |
1981 |
| details |
Late Wenlockian |
|
USSR(Estonian SSR) |
Nestor,V. Chitinozoan Zonal Assemblages, (Wenlock, Estonia). |
1982 |
| details |
Late Cambrian |
Ordovician |
Romania |
Dimitrescu,R. Early Caledonian event in the Pre-Alpine metamorphic sequences the Romanian Carpathians |
1985 |
| details |
Late Llandoverian |
|
Saudi Arabia |
McClure,H.A. Chitinozoan and acritarch assemblages stratigraphy and biogeography of the Early Palaeozoic of Northw West Arabia |
1988 |
| details |
Late Llandoverian |
|
USSR(Estonian SSR) |
Nestor,V. Chitinozoans at the Llandovery-Wenlock transition in the Jaagarahu core, Estonia. |
1993 |
| details |
Silurian |
|
Saudi Arabia |
Steemans,P. Silurian and Lower Emsian spores in Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) |
1995 |
| details |
Ordovician |
|
W.Germany(Baden) |
Hann,H.P. et al. Ordovician chitinozoans and acritarchs form metamorphic greywackes of the zone of Badenwiler-Lenzkirch, Black Forest, Southwest Germany |
1995 |
| details |
Tremadocian |
Ludlovian |
W.Germany(Bavaria) |
Sawatzki,G. et al. Lower Paleozoic chitinozoans and acritarchs from gneisses of the Southern Black Forest, southwest Germany. |
1997 |
| details |
Caradocian |
Early Ashgillian |
Russia(Siberia) |
Sennikov,N.V. et al. Synthesis of the graptolite and chitinozoan scales for the Altai-Salair Ordovician Basin (Siberia, Russia). |
2003 |