| details |
Middle Arenigian |
Early Ashgillian |
Spain |
Paris,F. Chitinozoan Biostratigrphy in the Ordovican of South-West Europe |
1980 |
| details |
Late Cambrian |
|
Spain |
Fombella Blanco,M.A. Resemblances and differences between the palynological associations of Upper Cambrian age in the northwest of Spain, (Vozmediano), and North of Africa. |
1987 |
| details |
Late Ludlovian |
Early Siegenian |
Spain |
Rodriguez,R.M. New miospores of the San Pedro Formation of Geras de Gordon, Cantabrica Cordillera (Leon Province, northeast Spain). |
1978 |
| details |
Late Ashgillian |
Early Llandoverian |
South Africa |
Gray,J. et al. Age of the Cedarberg Formation, South Africa and early land plant evolution. |
1986 |
| details |
Ashgillian |
Llandoverian |
Scotland(Dumfries) |
Whelan,G.M. Acritarch and chitinozoan distribution across the type Ordovician-Silurian boundary at Dobb's Linn, Scotland |
1986 |
| details |
Late Caradocian |
Early Ashgillian |
Saudi Arabia |
Caputo,M.V. et al. Migration of glacial centers across Gondwana during Paleozoic Era |
1985 |
| details |
Tremadocian |
Early Wenlockian |
S.Ireland(Tipperary) |
Colthurst,J.R.J. et al. Palaeontological evidence for the age of the Lower Palaeozoic rocks of the Slievenamon Inlier, County Tipperary. |
1977 |
| details |
Middle Llandoverian |
Ludlovian |
S.Ireland(Clare) |
Holland,C.H. et al. Evolving life of the developing Caledonides. (In: The Caledonides of the British Isles - Review. A.L.Harris, C.H.Holland and B.E.Leake, editors) |
1979 |
| details |
Middle Arenigian |
Early Ashgillian |
Portugal |
Paris,F. Chitinozoan Biostratigrphy in the Ordovican of South-West Europe |
1980 |
| details |
Late Famennian |
Early Tournaisian |
Pennsylvania |
Traverse,A. Plant microfossils help date rocks of questionable age. |
1974 |
| details |
Ludlovian |
|
Pennsylvania |
Gray,J. et al. Early Silurian spore tetrads from New York earliest new world evidence for vascular plants. |
1971 |
| details |
Middle Devonian |
|
Paraguay |
Men©ndez,C.A. et al. Devonian spores from Paraguay. |
1967 |
| details |
Devonian |
|
Paraguay |
Potter,D.E. Devonian chitinozoa and Hystrichospherids from Par Aguay |
1962 |
| details |
Desmoinesian |
|
Oklahoma |
Wilson,L.R. et al. Paleobotanical evidence for an age assignment of the Bostwick Member (Pennsylvanian) |
1982 |
| details |
Ordovician |
|
Oklahoma |
Wilson,L.R. et al. Acid-resistant microfossils of the Sylvan Shale (Ordovician), of Oklahoma. |
1962 |
| details |
Namurian |
|
Oklahoma |
Cashman,P.B. Lower Devonian chitinozoan Juveniles: Oldest fossil evidence of a Juvenile Stage in Protists, with an interpretation of their Ontogeny and relationship to all Ogromiid Foraminifera |
1991 |
| details |
Middle Ordovician |
Late Ordovician |
Ohio |
Schopf,J.M. et al. Acid-resistant microfossils from the Cynthiana Formation and Eden Group. |
1961 |