| original |
Llandoverian |
Wenlockian |
Czechoslovakia |
PacltovŠ,B. The methodology and new technique of micropaleontological study of metamorphic rocks. (In: Correlation of the Proterozoic and Paleozoic Stratiform deposits VII) |
1984 |
| details |
Caradocian |
Wenlockian |
Nepal |
Sinha,H.N. et al. Record of Prolific and Indubitable acritarchs from the Lower Paleozoic strata of the Tethyan Garhwal Himalaya and age implication |
1996 |
| details |
Roadian |
Wordian |
Canada(Arctic) |
Utting,J. Palynostratigraphy of Permian and Lower Triassic Rocks, Sverdrup Basin, Canadian Arctic Archipelago |
1994 |