Extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies. Synonym: class Pteridospermopsida.
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Words linked to "Pteridospermopsida" : class Gymnospermae, Lyginopteridales, division Gymnospermophyta, class, Cycadofilicales, Gymnospermae, order Cycadofilicales, Gymnospermophyta, order Lyginopteridales |
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