| details |
Ordovician |
|
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 Ordovician |
Late Ordovician |
Worldwide |
Achab,A. Biogeography of Ordovician chitinozoa. (In: Advances in Ordovician Geology. C.R.Barnes and S.H.Williams, editors) |
1991 |
| details |
Early Soudleyan |
|
Wales(Powys) |
Cave,R. et al. Age of the Ordovician Andesitic Conglomerate of Castle Hill, Montgomery, Powys, Wales |
1988 |
| details |
Llanvirnian |
Llandeilian |
Wales |
Young,T.P. Discussion of a revision of the age of the Hen-dy-capel Ooidal Ironstone, (Ordovician), Llanenga, North Wales. (T.P.Young and Reply T.P.Young) |
1993 |
| details |
Harnagian |
|
Wales |
Atkinson,K. et al. Lower Caradocian (Upper Ordovician) chitinozoa from North Wales. |
1971 |
| details |
Ordovician |
|
W.Germany(Rhineland) |
Eisenack,A. Chitinozoans and Hystrichospheres in the Ordovician of the Rhine Schiefergebirge. |
1939 |
| details |
Early Eifelian |
|
W.Germany(Rhineland) |
Pichler,R. Microfossils from the Devonian of the Southern Eifel Basin. (Contributions relating to the type sections at Wetteldorf Andschoenecken, No.12). |
1971 |
| details |
Ordovician |
|
W.Germany |
Collinson,C. et al. North American Paleozoic Chitinozoa |
1955 |
| details |
Middle Ordovician |
|
USSR(Yaroslav) |
Umnova,N.I. Distribution of chitinozoa in the Ordovician of the Russian Platform |
1964 |
| details |
Arenigian |
Middle Ordovician |
USSR(Yaroslav) |
Umnova,N.I. Distribution of chitinozoa in the Ordovician of the Russian Platform |
1964 |
| details |
Arenigian |
Middle Ordovician |
USSR(Yaroslav) |
Umnova,N.I. Distribution of chitinozoa in the Ordovician of the Russian Platform |
1964 |
| details |
Arenigian |
Middle Ordovician |
USSR(Yaroslav) |
Umnova,N.I. Distribution of chitinozoa in the Ordovician of the Russian Platform |
1964 |
| details |
Ordovician |
|
USSR(Uzbek SSR) |
Khan,R.S. et al. Stratigraphy of Ordovician deposits of Mountain Yuzhii Nuratai |
1986 |
| details |
Ordovician |
|
USSR(Uzbek SSR) |
Khan,R.S. et al. Stratigraphy of Ordovician deposits of Mountain Yuzhii Nuratai |
1986 |
| details |
Ordovician |
|
USSR(Uzbek SSR) |
Kuzichkina,Y.M. et al. On the question of lowering the limit of the advent of higher plants in connection with their co-discovery with Ordivician chitinozoans. (In: Paleontology and Detailed Stratigraphic Correlation.) |
1982 |
| details |
Ordovician |
|
USSR(Uzbek SSR) |
Kuzichkina,Y.M. et al. On the question of lowering the limit of the advent of higher plants in connection with their co-discovery with Ordivician chitinozoans. (In: Paleontology and Detailed Stratigraphic Correlation.) |
1982 |
| details |
Llandeilian |
|
USSR(Ukrainian SSR) |
Zaslavskaya,N.M. et al. Chitinozoans in Ordovician and Silurian deposits of the Altai Mountains. (In: The Fauna and Biostratigraphy of Upper Ordovician and Silurian of the Altai-Sajan Region) |
1978 |