class 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: {Cycadopsida}, {Cycadophytina}, {subdivision Cycadophytina}, {Cycadophyta}, {subdivision Cycadophyta}]