pteridospermaphyta

• Groupe taxonomique utilisé dans certains systèmes de classification, correspondant à un ordre éteint de plantes à graines ayant existé aux ères paléozoïque et mésozoïque, et coïncidant avec l'ordre des Cycadofilicales.

A taxonomic group used in some classification systems, referring to an extinct division of seed plants that existed during the Paleozoic and Mesozoic eras, coextensive with the order Cycadofilicales.

indénombrable · nom propre

1. Extinct seed fernsC2formalscientific

   A group of extinct fossil gymnosperms, coextensive with the order Cycadofilicales, used in some classification systems.

   Ptéridospermaphytes

   • Pteridospermaphyta are known only from the fossil record of the Paleozoic era.
   • Scientists classify Pteridospermaphyta as an early group of seed plants.
   • The study of Pteridospermaphyta helps understand the evolution of gymnosperms.

   Synonymescycadofilicalespteridospermae