| original |
Late Ordovician |
|
Oklahoma |
Jenkins,W.A.M. Chitinozoa from the Ordovician Viola and Fernvale Limestones of the Arbuckle Mountains, Oklahoma. |
1969 |
| details |
Caradocian |
|
Canada(Quebec) |
Martin,F. Ordovician chitinozoa from Quebec and Ontario, Canada. |
1975 |
| details |
Late Ordovician |
|
Oklahoma |
Locquin,M.V. Thie Chitinomycetes of chitinozoa Paleozoic fossils |
1976 |
| details |
Early Cincinnatian |
|
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Llanvirnian |
Caradocian |
USA(Appalachian Bn.) |
Grahn,Y. et al. Lower Middle Ordovician chitinozoa from the Southern Appalachians, United States |
1984 |
| details |
Late Rocklandian |
Edenian |
New York |
Hart,C.P. Trenton Group chitinozoans from New York State. A brief review. |
1986 |