| details |
Nd |
|
Nd |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Jurassic |
|
Nd |
Scott,R.A. et al. How Old are the angiosperms? |
1960 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 4. Supplement to all Groups, (Turmae). |
1966 |
| original |
Middle Senonian |
|
W.Germany(N.Rhine) |
Pflug,H.D. Origin and development of the angiosperm pollen in earth history |
1953 |
| details |
Rhaetian |
Liassic |
Germany |
M¤dler,K.A. Remarks on the nomenclature of Mesozoic spores |
1962 |
| details |
Recent |
|
Nd |
DeЎk,M.H. Observations concerning changing form in Trilete spores. |
1959 |
| details |
Nd |
|
Nd |
Couper,R.A. Supposedly Colpate pollen grains from the Jurassic |
1955 |