| details |
Wenlockian |
Ludlovian |
England(Shropshire) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Llandoverian |
Early Wenlockian |
Canada(Ontario) |
Eley,B.E. et al. Acritarchs from the fossil Hill Formation (Silurian) of Southern Ontario, Canada |
1992 |
| details |
Late Ludlovian |
Pridolian |
Argentina(San Juan) |
Rubinstein,C.V. Palynology of the Upper Silurian (Los Espejos Formation) of the Quebrada de Las Aquaditas San Juan Precordillera, Argentina. |
1992 |
| details |
Late Ludlovian |
Pridolian |
Argentina(San Juan) |
Rubinstein,C.V. Palynology of the Upper Silurian, (Los Espejos Formation) of Loma de Los Piojos, San Juan Precordillera, Argentina. |
1992 |
| details |
Late Ludlovian |
Early Pridolian |
Argentina(San Juan) |
Rubinstein,C.V. Acritarchs from the Upper Silurian of San Juan, Argentina: Biostratigraphy and palaeobiogeography. (In: Contributions to Acritarch and Chitinozoan Research. S.G.Molyneux and K.J.Doring, editors) |
1993 |
| details |
Ludlovian |
Middle Pridolian |
Argentina(San Juan) |
Rubinstein,C.V. Palynological investigations in the Lower Paleozoic of Argentina |
1993 |
| details |
Late Gothlandian |
|
England |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Ludlovian |
Pridolian |
Argentina |
Rubinstein,C.V. Acritarchs from the Upper Silurian of Argentina:Their relationship with Gondwana |
1995 |
| details |
Nd |
|
Nd |
Strother,P.K. Acritarchs. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |