| original |
Middle Aktastinian |
|
South Africa |
Anderson,J.M. The biostratigraphy of the Permian and Triassic. Part 3. A review of Gondwana Permian palynology with particular reference to the northern Karoo Basin, South Africa. |
1977 |
| details |
Permian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Permian |
|
South Africa |
Grenfell,H.R. Probable fossil Zygnematacean algal spores Genera |
1995 |
| details |
Artinskian |
Kungurian |
Tanzania |
Semkiwa,P. et al. The geology, petrology, palynology and geochemistry of Permian Coal Basin in Tanzania. 1. Namwele-Mkomolo, Muze and Galula Coalfields |
1998 |