| original |
Mohawkian |
|
Minnesota |
Stauffer,C.R. Middle Ordovician polychaeta from Minnesota. |
1933 |
| details |
Ordovician |
|
W.Germany(Rhineland) |
Eisenack,A. Chitinozoans and Hystrichospheres in the Ordovician of the Rhine Schiefergebirge. |
1939 |
| details |
Middle Ordovician |
|
Minnesota |
Collinson,C. et al. North American Paleozoic Chitinozoa |
1955 |
| details |
Ordovician |
|
Oklahoma |
Whittington,H.B. Additional new Orgovician graptolites and a chitinozoan from Oklahoma. |
1955 |
| details |
Ordovician |
|
USSR(Estonian SSR) |
Eisenack,A. Microfossils of the Ordovician from the Baltic area.1. |
1958 |
| details |
Gothlandian |
|
Algeria |
Taugourdeau,P. et al. Distribution and description of Silurian-Devonian chitinozoans from some Drillings of the C.R.E.P.S., the C.F.P.A. and the S.M.Repal of the Sahara. |
1960 |
| details |
Ordovician |
|
Baltic |
Eisenack,A. Microfossils from the Baltic Ordovician. 2: Vaginatenkalk to Lyckholmer Stufe. |
1962 |
| details |
Late Ordovician |
|
Minnesota |
Taugourdeau,P. Ordovician chitinozoans of the USA; Comparison with ancient faunas. |
1965 |
| details |
Middle Ordovician |
|
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Middle Ordovician |
|
Asia |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Middle Ordovician |
Late Ordovician |
Atlantic Ocean(Northwest) |
Hinte,J.E. Van et al. Palaeozoic microfossils from Orphan Knoll, northwest Atlantic Ocean. |
1995 |