| details |
Middle Arenigian |
|
Australia(W.Australia) |
Combaz,A. et al. Palynostratigraphy of the Ordovician from some boreholes in the Canning Basin, Western Australia. |
1972 |
| details |
Late Arenigian |
|
Canada(Quebec) |
Achab,A. Chitinozoans of the Upper Arenigian, (Zone D) of the Levis Formation, Quebec, Canada. |
1982 |
| details |
Arenigian |
Ashgillian |
USA(Western) |
Hutter,T.J. Ordovician chitinozoan zones of Great Basin |
1987 |
| details |
Late Moridunian |
Fennian |
England |
Paris,F. Application of chitinozoans in long-distance Ordovician correlations. (In: Global Perspectives on Ordovician Geology. B.D. Webby and J.R. Laurie, editors) |
1992 |
| details |
Late Moridunian |
Fennian |
Nd |
Paris,F. Chitinozoan biostratigraphy and palaeoecology. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Middle Ordovician |
|
China(Hopei) |
Wang,X. et al. The Huanghuachang Section, potential as Global Stratotype for the base of the Middle Ordovician Series. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |