Bibliography – Main Keys for "gymnosperms"
| Title | Authors | Publication | Year | Actions |
|---|---|---|---|---|
| Archaeocycas and Phasmatocycas; new genera of Permian cycads | Mamay, S.H. | U.S. Geological Survey, Journal of Research vol. 1, no. 6, pp. 687-689 | 1973 | N/A |
| Cycadeoid types of the Kansas Cretaceous | Wieland, G.R. | American Journal of Science vol. 240, no. 3, pp. 192-203 | 1942 | N/A |
| Cycads; fossil evidence of late Paleozoic origin | Mamay, S.H. | Science new series, vol. 164, no. 3877, pp. 295-296 | 1969 | N/A |
| New Lower Permian plants, p. A118, <In>, Geological Survey Research 1968, Chapter A | Mamay, S.H., (invest.) | U.S. Geological Survey, Professional Paper no. 600-A, 371 pages | 1968 | N/A |
| Taeniopterid lamina on Phasmatocycas megasporophylls (Cycadales) from the Lower Permian of Kansas, USA, (abstr.) | Gillespie, W.H.; and Pfefferkorn, H.W. | West Virginia Academy of Science, Proceedings vol. 58, no. 1, p. 23 | 1986 | N/A |
| Taeniopterid lamina on Phasmatocycas megasporophylls (Cycadales) from the lower Permian of Kansas, USA | Gillespie, W.H.; and Pfefferkorn, H.W. | Review of Palaeobotany and Palynology vol. 49, no. 1/2, pp. 99-116 | 1986 | N/A |
Found 6 result(s).