Pteridospermae

1 definition found

From WordNet (r) 2.0 [wn]:

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