| details |
Frasnian |
|
Peru |
Wood,G.D. A stratigraphic, paleoecologic and paleobiogeographic review of the acritarchs Umbellasphaeridium deflandrei and Umbellasphaeridium saharicum. (In: Biostratigraphy. P.K.Sutherland and W.L.Manger, editors) |
1984 |
| details |
Eifelian |
Givetian |
Canada(Ontario) |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Ordovician |
Silurian |
USSR(Russian Platform) |
Umnova,N.I. Ordovician and Silurian acritarchs of the Moscow Basin and Prebaltic |
1975 |
| details |
Tremadocian |
Ludlovian |
USSR(Russian Platform) |
Umnova,N.I. Silurian and Ordovician acritarch assemblages from the northern and western parts of the Russian Platform. |
1974 |
| details |
Tremadocian |
Ludlovian |
USSR(Pre-Baltic) |
Umnova,N.I. Silurian and Ordovician acritarch assemblages from the northern and western parts of the Russian Platform. |
1974 |
| details |
Early Ordovician |
|
Finland |
Tynni,R. On Paleozoic microfossils in clastic dykes on the …land Islands and in the core samples of Lumparn. (In: Paleozoic sediments in the Rapakivi area of the …land Islands. L. Bergman, R. Tynni and B. Winterhalter, editors.) |
1982 |
| details |
Llandoverian |
|
USSR(Siberia) |
Tesakov,Y.I. et al. Silurian biozones of the northern Siberian Platform (Moiero River Basin). (In: Silurian Fauna and Flora of Polar Siberian Platform. B.S.Sokolov, editor) |
1986 |
| details |
Frasnian |
|
Belgium |
Stockmans,F. et al. Hystrichospheres of the Belgian Devonian (Wepion Drilling). |
1962 |
| details |
Middle Devonian |
|
Canada |
Stancliffe,R.P.W. et al. The acritarch genus Dorsennidium, Wicander, 1974, emend.Sarjeant and Stancliffe,1994: A reassessment of its constituent species |
1996 |
| details |
Late Silurian |
|
Spain |
Stancliffe,R.P.W. et al. The acritarch genus Dorsennidium, Wicander, 1974, emend.Sarjeant and Stancliffe,1994: A reassessment of its constituent species |
1996 |
| details |
Middle Ordovician |
|
France(Finistere) |
Stancliffe,R.P.W. et al. The acritarch genus Dorsennidium, Wicander, 1974, emend.Sarjeant and Stancliffe,1994: A reassessment of its constituent species |
1996 |
| details |
Wenlockian |
|
USSR(Tuvinskaya A.O.) |
Sheshegova,L.I. Phytoplankton of the Silurian from the Tuva, (the section of the "Elegest"). |
1975 |
| details |
Devonian |
|
Nd |
Sarjeant,W.A.S. Acritarchs; anellotubulates; dinoflagellates; hystrichospheres; melanosclerites; tasmanitids. (Edited by Fairbridge and Jablonsky) |
1979 |
| details |
Middle Devonian |
|
Canada |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Late Gothlandian |
|
Spain |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Middle Ordovician |
|
France |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |
| details |
Middle Devonian |
|
Canada |
Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. |
1994 |