original |
Middle Emsian |
|
England(Oxfordshire) |
Richardson,J.B. et al. Palynomorphs in Lower Devonian sediments from the Apley Barn borehole, Southern England. |
1978 |
original |
Emsian |
|
Belgium |
Lessuise,A. et al. Palynological observations in the Couvinian (Upper Emsian and Eifelian), of the eastern Flank of the Synclinorium of Dinnt, Belgium. |
1979 |
original |
Cambrian |
Tremadocian |
Italy |
Kalvacheva,R.K. et al. Acritarch evidence for the Cambrian age of Phyllites in the Agordo area (South-Alpine Basement of eastern Alps, Italy). |
1986 |
original |
Arenigian |
|
Colombia |
Thery,J.-M. et al. Discovery of Arenigian acritarchs from Araracuara, (Caqueta-Colombia). Reinterpretation of the Saliente del Vaupes Area. |
1986 |
original |
Tremadocian |
|
Spain |
Mette,W. Acritarchs from Lower Paleozoic rocks of the Western Sierra Morena, southwest Spain and biostratigraphic results. |
1989 |
original |
Tremadocian |
|
Argentina(Salta) |
Rubinstein,C.V. Tremadocian acritarchs from Northwestern Argentina |
1997 |