| details |
Late Riphean |
|
USSR(Chelyabinskaya) |
Keller,B.M. et al. Microfossils in the Riphean stratotype section in the Southern Urals |
1980 |
| details |
Late Riphean |
|
USSR(Urals) |
Yankauskas,T.V. Riphean microfossils of the Southern Urals. (In: Stratotype of Riphean Paleontology Paleomagnetism. B.M.Keller, editor) |
1982 |
| details |
Late Riphean |
|
USSR(Urals) |
Hofmann,H.J. Paleoscene #7 -Precambrian biostratigraphy |
1987 |
| details |
Proterozoic |
|
Canada(Arctic) |
Hofmann,H.J. et al. Shale-Facies microfossils from the Proterozoic Bylot Supergroup, Baffin Island, Canada. |
1994 |