| Plant megafossils at Carboniferous-Permian boundary, (abstr.) |
Pfefferkorn, H.W.; and Gillespie, W.H. |
American Association of Petroleum Geologists, Bulletin vol. 65, no. 5, p. 970 |
1981 |
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
|