资料来源 : pyDict

种子蕨目

资料来源 : WordNet®

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