| details |
Nd |
|
Nd |
Yin,L.-M. Acritarchs. (In: Aspects of Cambrian-Ordovician boundary in Dayangcha, China. J.-Y.Chen, editor) |
1986 |
| details |
Nd |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Late Cambrian |
Early Ordovician |
Nd |
Martin,F. Acritarchs: A review |
1993 |
| details |
Cambrian |
Ordovician |
Nd |
Servais,T. et al. Value and meaning of the term acritarch. (In: Commision Internationale de microflore du Paleozoique (CIMP) Acritarch Subcommision: O.Fatka and T.Servais, editors) |
1996 |
| details |
Late Cambrian |
|
North America |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Late Cambrian |
|
China |
Volkova,N.A. Paleogeography of phytoplankton at Cambrian-Ordovician boundary |
1997 |
| details |
Ordovician |
|
Nd |
Servais,T. An annotated bibliographical review of Ordovician acritarchs |
1997 |
| original |
Early Tremadocian |
|
Canada(Alberta) |
Dean,W.T. et al. The sequence of Trilobite faunas and acritarchs microfloras at the Cambrian-Ordovician boundary, Wilcox Pass, Alberta, Canada. |
1982 |