| details |
Late Ordovician |
|
Oklahoma |
Jenkins,W.A.M. Chitinozoa from the Ordovician Sylvan Shale of the Arbuckle Mountains, Oklahoma |
1970 |
| details |
Late Ordovician |
|
Canada(Ontario) |
Jenkins,W.A.M. Chitinozoa from the Ordovician Sylvan Shale of the Arbuckle Mountains, Oklahoma |
1970 |
| details |
Middle Ordovician |
|
USSR(Vologda) |
Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. |
1976 |
| details |
Nd |
|
Nd |
Locquin,M.V. Thie Chitinomycetes of chitinozoa Paleozoic fossils |
1976 |
| details |
Caradocian |
Late Ashgillian |
Canada(Eastern Offshore) |
Jenkins,W.A.M. Ordovician rocks in the Eastcan et al. Freydis B-87 and other wells in offshore Atlantic Canada. |
1984 |