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pteridospermae |
1 definition found From WordNet r 1.6 [wn]: Pteridospermae n : used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales [syn: {Pteridospermae}, {group Pteridospermae}, {Pteridospermaphyta}, {group Pteridospermaphyta}]
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