| original |
Pridolian |
|
Baltic Sea |
Eisenack,A. New microfossils of the Baltic Silurian.2. |
1932 |
| details |
Silurian |
|
Baltic |
Collinson,C. et al. North American Paleozoic Chitinozoa |
1955 |
| details |
Valentian |
|
Algeria |
Deunff,J. et al. Palynoplanktonic correlation in the Cambro-Ordovician of the Sahara |
1961 |
| details |
Middle Ordovician |
Late Ordovician |
Europe |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Late Ordovician |
|
USSR(Baltic) |
Ditsevichyus,E.K. New chitinozoan species from Ordovician and Silurian deposits of the Southern Baltic and north-western Byelorussia.I.Acanthochitina and some Conochitina. (In: Palaeontology and stratigraphy of the Baltic Region and Byelorussia) |
1970 |
| details |
Late Ordovician |
|
USSR(Belorussian SSR) |
Ditsevichyus,E.K. New chitinozoan species from Ordovician and Silurian deposits of the Southern Baltic and north-western Byelorussia.I.Acanthochitina and some Conochitina. (In: Palaeontology and stratigraphy of the Baltic Region and Byelorussia) |
1970 |
| details |
Wenlockian |
|
USSR(Lithuanian SSR) |
Ditsevichyus,E.K. Ordovician and Silurian chitinozoan fauna of Lithuania and its stratigraphic significance |
1970 |
| details |
Middle Ordovician |
|
Finland |
Tynni,R. Ordovician hystrichospheres and chitinozoans in limestone from the Bothnian Sea. |
1975 |
| details |
Arenigian |
|
China(Yunnan) |
Gao,L.D. Lower Ordovician chitinozoans from Wuding and Luquan, Yunnan Province. |
1985 |