| details |
Carnian |
Norian |
USSR(Kazakh SSR) |
Yaroshenko,O.P. Miospores in Continental Triassic sediments of the Fore-Caspian Depression and their stratigraphic importance |
1969 |
| details |
Rhaetian |
|
Sweden |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| original |
Rhaetian |
Liassic |
Sweden |
Nilsson,T. On the occurrence of a Mesozoic oil shale in Schonen. |
1958 |
| details |
Rhaetian |
Liassic |
Sweden |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Nd |
|
Nd |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |