| original |
Permian |
|
Congo |
Kar,R.K. et al. Palaeozoic sporae dispersae from Zaire (Congo). 12. Assise a Couches De Houille from Greinerville Region. |
1976 |
| details |
Permian |
|
Zaire |
Grenfell,H.R. Probable fossil Zygnematacean algal spores Genera |
1995 |
| details |
Nd |
|
Nd |
Colbath,G.K. et al. Review of biological affinities of Paleozoic acid-resistant, organic walled eukaryotic algal microfossils, (including acritarchs). |
1995 |
| details |
Middle Permian |
Late Permian |
Australia(W.Australia) |
Grenfell,H.R. Middle to Late Permian non-marine acritarchs and Zygnetmatacean algal zygospores from North-Western Australia -Their palaeoenvironmental significance |
1988 |
| details |
Carboniferous |
Quaternary |
Nd |
Geel,B.Van et al. Green and Blue-Green algae. 7A -Spores of Zygnemata. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |