| details |
Late Ordovician |
|
USSR(Orenburg) |
Ivanova,T.D. et al. To the structure of Lower Paleozoic sediments in the Orenburgskoe Priural'e. |
1979 |
| details |
Late Arenigian |
Early Llanvirnian |
England(Cumberland) |
Arthurton,R.S. et al. Ordovician and Silurian. (In: Geology of the Country around Penrith.) |
1981 |
| details |
Late Champlainian |
Early Cincinnatian |
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Llanvirnian |
|
Canada(Newfoundland) |
Achab,A. Llanvirnian chitinozoans, (Table Head Formation) of Western Newfoundland, Canada. |
1983 |
| details |
Late Arenigian |
Early Llanvirnian |
China(Kweichow) |
Zhen,Y. The biostratigraphical significance of the Chitino Zoans from the Meitan Formation at Honghuayuan Northern Guizhou. |
1985 |
| details |
Llanvirnian |
Early Caradocian |
Canada(Quebec) |
Achab,A. Succession of chitinozoan assemblage from the Middle Ordovician of Quebec and eastern Canada |
1986 |
| details |
Llanvirnian |
Early Caradocian |
Canada(Arctic) |
Achab,A. et al. Ordovician chitinozoans from the Arctic Platform and the Franklinian Miogeosyncline in northern Canada |
1995 |
| details |
Early Caradocian |
Middle Caradocian |
Tennessee |
Siesser,W.G. et al. Caradocian chitinozoans from the Central Basin, Tennessee |
1998 |
| details |
Ashgillian |
|
Canada(Newfoundland) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Ashgillian |
|
Canada(Quebec) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Ashgillian |
|
Canada(Arctic) |
Achab,A. et al. The Laurentian Ordovician chitinozoan zonation: some modifications and some remaining problems. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |