| details |
Arenigian |
|
China(Yunnan) |
Gao,L.D. Lower Ordovician chitinozoans from Wuding and Luquan, Yunnan Province. |
1985 |
| details |
Llandeilian |
|
Spain |
Gutierrez Marco,J.C. et al. Trilobites and graptolites of the terminal Grey Brown Limestones of the "Bancos Mixtos" (Upper Ordovician of the Central Iberian Meridian) zone new elements from the Mine Shaft. |
1987 |
| details |
Late Ordovician |
|
Scotland(Ayr) |
Whelan,G.M. Preliminary acritarch and chitinozoan distributions across Ordovician-Silurian boundary stratotype at Dob's Linn, Scotland. (In: A Global Analysis of the Ordovician-Silurian Boundary. L.R.M.Cocks and R.B.Rickards, editors) |
1988 |
| details |
Ashgillian |
|
China(Kweichow) |
Qian,Z.-S. et al. Chitinozoans from the Wufeng Formation, (Ashgillian), of the Yangzi Region |
1989 |
| details |
Harnagian |
Onnian |
Gondwanaland |
Paris,F. The Ordovician chitinozoan biozones of the northern Gondwana Domain |
1990 |
| details |
Late Soudleyan |
Cautleyan |
Saudi Arabia |
Al-Hajri,S. Biostratigraphy of the Ordovician chitinozoa of Northwestern Saudi Arabia. (In: Palaeozoic Palynostratigraphy of the Kingdom of Saudi Arabia. B.Owens et al, editors) |
1995 |