cycadopsida

• Classe taxonomique de plantes gymnospermes ressemblant à des palmiers, comprenant l'ordre actuel des cycadales et plusieurs ordres éteints; parfois traitée comme une classe, parfois comme une subdivision.

A taxonomic class of palmlike gymnosperms that includes the surviving order Cycadales and several extinct orders; it is sometimes considered a class and sometimes a subdivision.

nom propre

1. Class of gymnospermsC2formalscientific

   A class of palmlike gymnosperms that includes the surviving order Cycadales and several extinct orders; possibly not a natural group.

   Cycadophytes (classe des cycadopsides)

   • Cycadopsida is a class of gymnosperms that includes cycads and their extinct relatives.
   • The classification of Cycadopsida is debated among botanists.
   • Fossil records show that Cycadopsida was once more diverse.