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