| original |
Late Ordovician |
|
Indiana |
Colbath,G.K. Organic-walled microphytoplankton from the Eden Shale, (Upper Ordovician), Indiana, USA. |
1979 |
| details |
Caradocian |
Ashgillian |
Canada(Newfoundland) |
Legault,J.A. First report of Ordovician, (Caradoc-Ashgill) palynomorphs from Orphan Knoll, Labrador Sea. |
1982 |
| original |
Turonian |
|
Australia(Queensland) |
Cookson,I.C. et al. Microfossils of Australian Mezosoic and Tertiary sediments. Second part. |
1982 |
| details |
Late Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Turonian |
|
Australia(Queensland) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |