| cycadopsida | (n) 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), Syn. Cycadophytina, class Cycadopsida, subdivision Cycadophytina, Cycadophyta, subdivision Cycadophyta |