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Definitions of pteridosperm
  1. noun
    an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)

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Definition that contains pteridosperm
  • seed fern an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
  • pteridosperm an extinct seed-producing fernlike plant of the order Cycadofilicales (or group Pteridospermae)
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