For a long time, the Cordaitales have been regarded as the dominant gymnosperm group of the Palaeozoic era. After the discovery of Pteridospermales, it became apparent that both the groups were present in the Palaeozoic. Although recorded from the Lower Pennsylvanian...
CITATION STYLE
Biswas, C., & Johri, B. M. (1997). Cordaitales. In The Gymnosperms (pp. 127–136). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-662-13164-0_13
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