| details |
Late Cambrian |
Middle Ordovician |
USSR(Pre-Baltic) |
Timofeev,B.V. Ancient flora of the Prebaltic Region and its stratigraphic significance |
1959 |
| original |
Middle Devonian |
|
W.Germany(Bavaria) |
Sannemann,D. Hystrichospheres of the Silurian and Middle Devonian of the Frankenwald and their finestructure |
1955 |
| details |
Middle Devonian |
|
W.Germany(Bavaria) |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Late Givetian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Middle Devonian |
|
W.Germany(Bavaria) |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |