| details |
Early Gothlandian |
|
Tennessee |
Wood,G.D. Biostratigraphic and paleoecologic significance of acritarchs from the Waldron Formation, (Lower Silurian), midcontinent, United States |
1984 |
| details |
Nd |
|
Nd |
Cramer,F.H. et al. Taxonomic considerations on the acritarchs of the Middle and Upper Silurian of northern Spain. |
1968 |
| details |
Early Pliensbachian |
|
USSR(Siberia) |
Ilyina,V.I. Jurassic palynology of Siberia |
1985 |
| details |
Wenlockian |
|
Gondwanaland |
Cramer-Diez,F.H. Spatial and chronological arrangement of Silurian palynofacies. |
1972 |
| details |
Early Gothlandian |
|
USA(Mid-Continent) |
Wood,G.D. Palaeoecology and biostratigraphy of Lower Silurian, (Llandovery-Wenlock), acritarchs from the Mid-Continent, United States. |
1988 |
| details |
Early Paleocene |
|
India(Rajasthan) |
Das Gupta,S.K. The stratigraphy of the West Rajasthan Shelf |
1977 |
| details |
Silurian |
|
Nd |
Rudavskaya,V.A. Hystrichosphaerida of the Paleozoic Era |
1965 |
| details |
Devonian |
|
USSR(Ukrainian SSR) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Early Permian |
|
USSR(Urals) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Devonian |
|
USSR(Urals) |
Kulkova,I.A. The Eocene climatic optimum of northern Asia. (In: Climates of the Earth in the Geological Past. A.A.Velichko and A.L.Chepalyga, editors) |
1987 |
| details |
Silurian |
|
Nd |
Evitt,W.R. Observations on the morphology of fossil dinoflagellates. |
1961 |
| details |
Nd |
|
Nd |
Evitt,W.R. A discussion and proposals concerning fossil dinoflagellates, Hystrichospheres, and acritarchs. II. |
1963 |
| original |
Wenlockian |
|
England(Shropshire) |
Downie,C. Deunffia and Domasia, new genera of Hystrichospheres. |
1960 |
| details |
Ordovician |
|
Nd |
Downie,C. The geological history of the microplankton. |
1967 |
| details |
Nd |
|
Nd |
Brito,I.M. The acritarchs |
1967 |
| details |
Nd |
|
Nd |
Sarjeant,W.A.S. The Hystrichospheres. A review and discussion. |
1961 |
| details |
Middle Cambrian |
|
Baltic |
Rudavskaya,V.A. Palaeozoic Hystrichospheres. |
1969 |