| details |
Nd |
|
Nd |
Remy,W. Investigations of Coaly preserved fertile and Sterile Sphenophylls and forms of Uncertain position. |
1955 |
| details |
Nd |
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Nd |
Potonie,R. The phylogeny of the spore shape in regard to families of fossil plants (except the angiosperms). |
1961 |
| details |
Nd |
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Nd |
Potonie,R. Synopsis of the Sporae in situ. |
1962 |
| details |
Nd |
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Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 4. Supplement to all Groups, (Turmae). |
1966 |
| details |
Carboniferous |
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Nd |
Bharadwaj,D.C. et al. Suggestions for a morphological classification of sporae dispersae. |
1968 |
| details |
Nd |
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Nd |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |