| original |
Middle Llandoverian |
|
USSR(Estonian SSR) |
Nestor,V.K. Middle Llandoverian chitinozoans from Estonia. |
1980 |
| 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 Llandoverian |
Early Wenlockian |
Belgium |
Verniers,J. The Silurian chitinozoa of the Mehaigne area (Brabant Massif, Belgium). |
1982 |
| details |
Llandoverian |
|
USSR(Siberia) |
Zaslavskaya,N.M. Silurian of Siberian Platform chitinozoa |
1983 |
| details |
Late Llandoverian |
|
USSR(Estonian SSR) |
Nestor,V. Distribution of chitinozoans in the Late Llandoverian Rumba Formation (Pentamerus Oblongus Beds) of Estonia |
1984 |
| details |
Early Llandoverian |
|
Kentucky |
Grahn,Y. et al. Chitinozoans from the Ordovician-Silurian boundary Beds in the eastern Cincinnati Region in Ohio and Kentucky |
1985 |
| details |
Early Llandoverian |
|
Ohio |
Grahn,Y. et al. Chitinozoans from the Ordovician-Silurian boundary Beds in the eastern Cincinnati Region in Ohio and Kentucky |
1985 |
| details |
Llandoverian |
Wenlockian |
China(Hupei) |
Geng,L.-Y. et al. Sequences of Llandoverian chitinozoans in Yangzi Region |
1988 |
| details |
Late Rhuddanian |
Aeronian |
Worldwide |
Grahn,Y. Chitinozoan stratigraphy in the Ashgil and Llandovery. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Middle Llandoverian |
|
USSR(Estonian SSR) |
Grahn,Y. Chitinozoan stratigraphy in the Ashgil and Llandovery. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Late Richmondian |
Early Aeronian |
Ohio |
BergstrŠ¶m,S.M. et al. The Ordovician-Silurian boundary in the United States. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Llandoverian |
|
China(Szechwan) |
Fang,X. et al. Silurian microflora and chitinozoa in Guanyinqiao Qijiang County Sichuan Province and their stratigraphic significance |
1988 |
| details |
Middle Llandoverian |
|
Greenland |
Grahn,Y. et al. Chitinozoans from Ordovician and Silurian Shelf and Slope sequences in North Greenland. (In: Palaeozoic fossils and stratigraphy from North Greenland) |
1989 |
| details |
Late Rhuddanian |
Late Aeronian |
Worldwide |
Paris,F. Chitinozoans. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Aeronian |
Early Telychian |
China(Kweichow) |
Geng,L.-Y. Chitinoaoz near Aeronian-Telychian boundary at Leijiatun of Shiqian, North Guizhou. |
1990 |
| details |
Aeronian |
Early Telychian |
China(Kweichow) |
Geng,L.-Y. Chitinoaoz near Aeronian-Telychian boundary at Leijiatun of Shiqian, North Guizhou. |
1990 |
| details |
Llandoverian |
|
Estonia |
Nestor,V. Biostratigraphy: Silurian chitinozoans |
1990 |