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pteridospermae

/ˌtɛr.ɪ.dəʊˈspɜː.miː/

1 entry

noun

/ˌtɛr.ɪ.dəʊˈspɜː.miː/C2formalscientific
  • ruТаксономическая группа, используемая в некоторых системах классификации для обозначения вымершего отряда ископаемых голосеменных растений, совпадающая с отрядом Cycadofilicales.

A taxonomic group used in some classification systems to refer to an extinct order of fossil gymnosperms, coextensive with the order Cycadofilicales.

uncountable · proper noun

  1. Extinct seed fernsC2formalscientific

    A group of extinct fossil gymnosperms, coextensive with the order Cycadofilicales, used in some classification systems.

    ruСеменные папоротники

    • Pteridospermae are known from the Devonian to the Jurassic periods.
    • Fossils of Pteridospermae show characteristics of both ferns and seed plants.
    • The classification of Pteridospermae has been revised with new fossil discoveries.

    Synonymscycadofilicales