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Meaning of CLASS PTERIDOSPERMOPSIDA

WordNet Dictionary
 
 Definition: [n]  extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
 
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 Synonyms: Pteridospermopsida
 
 See Also: class, class Gymnospermae, Cycadofilicales, division Gymnospermophyta, Gymnospermae, Gymnospermophyta, Lyginopteridales, order Cycadofilicales, order Lyginopteridales

 

 

 

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