seed fern

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Related to Seed ferns: Conifers, Pteridospermophyta
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Synonyms for seed fern

an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)

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References in periodicals archive ?
This septation hypothesis is further extended to include all pteridosperms, thus providing a basic evolutionary difference between the seed ferns and other groups.
The cones led botanists to first place the species with the gymnosperms, the broad group that includes conifers, ginkgoes, and seed ferns.
These termites and their ancestors are thought to have been eating old dead wood for at least 400 million years, since the Devonian, when Earth's forests consisted of tree lycopods and giant seed ferns.
Seed ferns from the late Paleozoic and Mesozoic: any angiosperm ancestors lurking there?
The large number of seed ferns that possess climber hooks indicates that this scrambling/climbing strategy was effective.