| details |
Precambriam |
|
China |
Xing,Y. Advance on study of Precambrian micropalaeophyta in China. |
1987 |
| original |
Late Riphean |
|
USSR(Urals) |
Pykhova,N.G. Precambrian acritarchs of the Moscow Graben and Urals and stratigraphic significance |
1973 |
| details |
Late Precambrian |
|
China(Fukien) |
Xing,Y. et al. Micropalaeophyta. (In: Late Precambrian paleontology of China. Y.Xing et al, editors) |
1985 |
| details |
Late Riphean |
|
USSR(Urals) |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |