Definition of Cycadopsida
1. Noun. Palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders; possibly not a natural group; in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta).
Generic synonyms: Class
Group relationships: Class Gymnospermae, Division Gymnospermophyta, Gymnospermae, Gymnospermophyta
Member holonyms: Cycadales, Order Cycadales, Bennettitales, Order Bennettitales
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