Progymnosperms are ancient plants that don't exist anymore. They were like woody plants with spores and probably came from trimerophytes.[1] Later, they led to the development of gymnosperms, which are the ancestors of acrogymnosperms and angiosperms (flowering plants). People sometimes call them Progymnospermophyta or Progymnospermopsida.
Progymnosperms Middle Devonian – Lopingian | |
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Archaeopteris fossil leaves | |
Scientific classification | |
Kingdom: | |
Class: | †Progymnospermopsida
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