| original |
Late Arenigian |
Early Llanvirnian |
Morocco |
Cramer,F.H. et al. Upper Arenigian to Lower Llanvirnian acritarchs from the subsurface of the Tadla Basin in Morocco. |
1974 |
| details |
Early Llanvirnian |
|
Wales(Anglesey) |
Fenton,J.P.G. Palynological evidence for the age of the Dulas Formation (Ordovician) in Anglesey (North Wales). |
1976 |
| details |
Early Paleozoic |
|
Nd |
Cramer,F.H. et al. Lower Paleozoic acritarchs. |
1979 |
| details |
Arenigian |
Llanvirnian |
Ireland(Isle Of Man) |
Molyneux,S.G. New evidence for the age of the Manx Group, Isle of Man. |
1979 |
| details |
Dinantian |
|
S.Ireland(Clare) |
Clayton,G. et al. Micropalaeontology of a Courceyan, (Carboniferous), Borehole section from Ballyvergin, County Clare, Ireland. |
1980 |
| details |
Arenigian |
|
Ireland |
Smith,D.G. Progress in Irish Lower Palaeozoic palynology. |
1981 |
| details |
Caradocian |
|
England(Shropshire) |
Turner,R.E. Reworked acritarchs from the type section of the Ordovician Caradoc series. Shropshire. |
1982 |
| details |
Arenigian |
Early Llanvirnian |
United Kingdom |
Downie,C. Acritarchs in British stratigraphy |
1984 |
| details |
Late Arenigian |
Late Llandoverian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Arenigian |
|
Czechoslovakia |
VavrdovЎ,M. Excystment opening and the affinities of acritarchs. |
1992 |
| details |
Late Arenigian |
Early Llanvirnian |
Czechoslovakia |
VavrdovЎ,M. Acritarch assemblages in the Arenig series of the Prague Basin, Czech Republic. (In: Contributions to Acritarch and Chitinozoan Research. S.G.Molyneux and K.J.Doring, editors) |
1993 |
| details |
Llanvirnian |
|
Libya |
Abuhmida,F. et al. Palynostratigraphy and paleoenvironmental study of Middle and Upper Ordovician sequences in NW Sirt Basin, Libya. (In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |