| details |
Ordovician |
Silurian |
Baltic |
Eisenack,A. Chitinozoa of the Baltic Region. |
1968 |
| details |
Late Cambrian |
Middle Ordovician |
Sweden |
Bergstrom,J. et al. A new cutting through Upper Cambrian and Middle Ordovician in the Ravatofta District, Scania. |
1967 |
| details |
Early Caradocian |
Middle Caradocian |
USSR(Estonian SSR) |
Grahn,Y. Ordovician chitinozoa from Tallinn, Norther Estonia. |
1984 |
| details |
Late Tremadocian |
Ludlovian |
Europe |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Late Ordovician |
Llandoverian |
Austria |
Priewalder,H. et al. Petrographic and tectonic investigation of the Ennstaler Phyllites (Lower Tauern, Styria) and the Silurian age owing to chitinozoan. |
1976 |
| details |
Llanvirnian |
Llandeilian |
Morocco |
Rahmani,K. Palynologic study of Paleozoic (Ordovician, Silurian, Devonian) of the Rabat Region, (Oued Bou-Regreg), Morocco. |
1983 |
| details |
Early Ordovician |
Late Gothlandian |
Europe |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Idavere |
Keila |
USSR(Estonian SSR) |
Grahn,Y. et al. Precise chitinozoan dating of Ordovician impact events in Baltoscandia. |
1996 |
| details |
Frasnian |
Famennian |
USSR(Belorussian SSR) |
Bagdasaryan,L.L. Palynological characteristics of oil ranges of Belorussia. (In: Palynological Studies. Collected Articles. S.R.Samoilovich, editor) |
1976 |
| details |
Late Idavere |
Early Keila |
Norway |
Grahn,Y. et al. Caradocian and Ashgillian chitinozoan biostratigraphy of the Oslo Asker and Ringerike Districts, Oslo Region, Norway. |
1994 |
| details |
Silurian |
Early Devonian |
USSR(Ukrainian SSR) |
Obut,A.M. On the geographical distribution, comparative morphology, ecology, phylogeny, and the taxonomic position of chitinozoa. |
1973 |
| details |
Caradocian |
Early Ashgillian |
Sweden |
Grahn,Y. Caradocian and Ashgillian chitinozoa from the subsurface of Gotland |
1982 |
| details |
Late Algonkian |
Cambrian |
E.Germany(Karl Marx) |
Dietrich,H. Information on chitinozoan fauna in the Saxothurin Gian metamorphic complex |
1967 |
| details |
Arenigian |
Ashgillian |
USA(Western) |
Hutter,T.J. Ordovician chitinozoan zones of Great Basin |
1987 |
| details |
Late Ordovician |
|
Nd |
Jansonius,J. et al. Chitinozoa. |
1978 |
| details |
Early Cincinnatian |
|
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Late Ordovician |
|
Missouri |
Miller,M.A. Paniculaferum missouriensis, gen.et sp.nov., a new Upper Ordovician acritarch from Missouri, USA. |
1991 |