| original |
Edenian |
|
Kentucky |
Jacobson,S.R. Acritarchs from the Upper Ordovician Clays Ferry Formation, Kentucky, USA. |
1978 |
| original |
Middle Ordovician |
Late Ordovician |
New York |
Jacobson,S.R. Acritarchs from Middle and Upper Ordovician rocks in New York State and the Cincinnati Region in Ohio and Kentuck. |
1978 |
| original |
Caradocian |
Early Ashgillian |
Ohio |
Jacobson,S.R. Acritarchs from Middle and Upper Ordovician rocks in New York State and the Cincinnati Region in Ohio and Kentuck. |
1978 |
| original |
Middle Ordovician |
Late Ordovician |
Kentucky |
Jacobson,S.R. Acritarchs from Middle and Upper Ordovician rocks in New York State and the Cincinnati Region in Ohio and Kentuck. |
1978 |
| details |
Middle Ordovician |
Late Ordovician |
Ohio |
Jacobson,S.R. Acritarchs as paleoenvironmental indicators in Middle and Upper Ordovician rocks from Kentucky, Ohio and New York. |
1979 |
| details |
Middle Ordovician |
Late Ordovician |
New York |
Jacobson,S.R. Acritarchs as paleoenvironmental indicators in Middle and Upper Ordovician rocks from Kentucky, Ohio and New York. |
1979 |
| details |
Edenian |
|
Ohio |
Colbath,G.K. Cynonymy of Edenian, (Late Ordovician), organic-walled microphytoplankton taxa. |
1981 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Ordovician |
|
China(Hupei) |
Yin,L.-M. New forms of acritarch from Early Ordovician sediments in Yichang, Hubei, China. |
1994 |
| details |
Ordovician |
|
Nd |
Servais,T. An annotated bibliographical review of Ordovician acritarchs |
1997 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |