| details |
Early Gothlandian |
|
USSR(Baltic) |
Eisenack,A. Hystrichospheres and related forms in the Baltic Silurian. |
1938 |
| details |
Early Gothlandian |
|
USSR(Baltic) |
Eisenack,A. Hystrichospheres and related forms in the Baltic Silurian. |
1938 |
| details |
Ordovician |
|
W.Germany(N.Rhine) |
Kr¤usel,R. Are the Paleozoic Hystrichosphaeridiea cysts or plant spores? |
1939 |
| details |
Ordovician |
|
W.Germany(Rhineland) |
Eisenack,A. Chitinozoans and Hystrichospheres in the Ordovician of the Rhine Schiefergebirge. |
1939 |
| details |
Nd |
|
Nd |
Eisenack,A. The Construction of the walls of the dinoflagellates. |
1939 |
| details |
Late Ordovician |
|
Wales |
Lewis,H.P. The microfossils of the Upper Caradocian Phosphate deposits of Montgomeryshire, North Wales |
1940 |
| details |
Ypresian |
|
Belgium |
Pastiels,A. Contribution to the study of microfossils of the Belgian Eocene. |
1948 |
| details |
Silurian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Late Cambrian |
|
USSR(Estonian SSR) |
Eisenack,A. On Hystrichospheres and other microffossils of the Baltic Silurian and Cambrian |
1951 |
| details |
Silurian |
|
Baltic |
Deflandre,G. Groups Incertae Sedis.Hystrichospheres. chitinozoans. |
1952 |
| details |
Oligocene |
|
Germany |
Gocht,H. Hystrichospheres and other microorganisms in Oligocene deposits of North and Central Germany. |
1952 |
| details |
Oligocene |
|
Germany |
Gocht,H. Hystrichospheres and other microorganisms in Oligocene deposits of North and Central Germany. |
1952 |
| details |
Early Oligocene |
|
Poland |
Eisenack,A. Microfossils from the Lower Oligocene phosphorites of Samland and concerning the uniformity of Hystrichospheres. |
1954 |
| details |
Early Oligocene |
|
Poland |
Eisenack,A. Microfossils from the Lower Oligocene phosphorites of Samland and concerning the uniformity of Hystrichospheres. |
1954 |
| original |
Late Givetian |
|
W.Germany(Bavaria) |
Sannemann,D. Hystrichospheres of the Silurian and Middle Devonian of the Frankenwald and their finestructure |
1955 |
| original |
Late Givetian |
|
W.Germany(Bavaria) |
Sannemann,D. Hystrichospheres of the Silurian and Middle Devonian of the Frankenwald and their finestructure |
1955 |
| original |
Middle Clintonian |
Late Clintonian |
New York |
Fisher,J.C. The Hystrichosphaerids in the Clinton Group, (Silurian), of New York State. |
1955 |