pteridospermae

1 definition found

pteridospermae - WordNet (r) 2.1 (2005) :

  Pteridospermae
      n 1: used in some classification systems: a group of extinct
           fossil gymnosperms coextensive with the order
           Cycadofilicales [syn: Pteridospermae, group Pteridospermae
           , Pteridospermaphyta, group Pteridospermaphyta
           ]