| details |
Oligocene |
|
England(Isle of Wight) |
M¤dler,K.A. Azolla of the Quaternary and Tertiary and its significance for the taxonomy of older spores |
1954 |
| details |
Oligocene |
|
Canada(British Columbia) |
Hills,L.V. et al. Azolla primaeva and its phylogenetic significance. |
1967 |
| details |
Early Oligocene |
|
England(Isle of Wight) |
Fowler,K. Megaspores and Massulae of Azolla prisca from the Oligocene of the Isle of Wight. |
1975 |
| details |
Early Oligocene |
|
England(Isle of Wight) |
Fowler,K. An escape mechanism for Spermatozoids in Azolla massulae. |
1975 |
| details |
Oligocene |
|
USSR |
Friis,E.M. EM: Studies on Salviniaceae megaspores from the Middle Miocene Fasterholt Flora, Denmark. |
1977 |
| details |
Oligocene |
|
Poland |
Friis,E.M. EM: Studies on Salviniaceae megaspores from the Middle Miocene Fasterholt Flora, Denmark. |
1977 |
| details |
Late Eocene |
Early Oligocene |
England(Isle of Wight) |
Scott,A.C. et al. Organic sedimentary particles: results from Scanning Electron Microscope studies of fragmentary plant material |
1978 |
| details |
Late Eocene |
|
England(Isle of Wight) |
Collinson,M.E. A new multiple-floated Azolla from the Eocene of Britian with a brief review of the genus. |
1980 |
| details |
Early Oligocene |
|
England(Isle of Wight) |
Collinson,M.E. Palaeofloristic assemblages and palaeoecology of the Lower Oligocene Bembridge Marls, Hamstead Ledge, Isle of Wight |
1983 |
| details |
Late Eocene |
|
England(Isle of Wight) |
Collinson,M.E. Freshwater macrophytes in palaeolimnology |
1988 |
| details |
Bartonian |
Early Chattian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Oligocene |
|
England |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Priabonian |
|
Germany(Rhineland) |
Kempf,E.K. Hydropterid floras as time marks in the Rhenish Lignite Tertiary. |
1993 |
| details |
Oligocene |
|
England |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Oligocene |
|
England(Isle of Wight) |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |