| details |
Early Givetian |
Middle Frasnian |
North America |
Wicander,R. Middle Devonian acritarch biostratigraphy of North America |
1984 |
| details |
Emsian |
|
W.Germany(Rhineland) |
Pflug,H.D. et al. Palynology in metamorphic Rocks-Indication of Early land plants |
1987 |
| details |
Emsian |
|
W.Germany(Saarland) |
Pflug,H.D. et al. On the evolution of the eukaryotic phytoplankton in the Riphean: New evidence from the Beltian Series of North America. |
1988 |
| details |
Late Siegenian |
|
W.Germany(Saarland) |
Reitz,E. Devonian spores of the Phyllite Zone of the Southern "Rheinisches Schiefergebirge". |
1989 |
| details |
Late Devonian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Early Devonian |
|
W.Germany(Rhineland) |
Pflug,H.D. et al. Palynostratigraphy in Phanerozoic and Precambrian metamorphic rocks. (In: Proceedings of the 9th Alfred Wegener Conference-IGCP Project 157, M.Schidlowski, editor) |
1992 |
| details |
Late Devonian |
|
Canada(Alberta) |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |