Pteridospermopsida

noun
extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies
Hypernyms: ↑class

Useful english dictionary. 2012.

Look at other dictionaries:

  • class Pteridospermopsida — noun extinct gymnosperms most of Carboniferous to Jurassic: seed ferns and allies • Syn: ↑Pteridospermopsida • Hypernyms: ↑class • Member Holonyms: ↑Gymnospermae, ↑class Gymnospermae, ↑Gymnospermophyta, ↑ …   Useful english dictionary

  • Samenfarne — Blätter eines Samenfarns aus dem Pennsylvanium von Ohio Zeitraum Karbon bis Kreide 360 bis 65 Mio. Jahre …   Deutsch Wikipedia

  • Medullosales — Temporal range: Carboniferous–Permian …   Wikipedia

  • class Gymnospermae — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Cycadofilicales — noun fossil gymnospermous trees or climbing plants from the Devonian: seed ferns • Syn: ↑order Cycadofilicales, ↑Lyginopteridales, ↑order Lyginopteridales • Hypernyms: ↑plant order • Member Holonyms: ↑Pteridospermopsida …   Useful english dictionary

  • division Gymnospermophyta — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Gymnospermae — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Gymnospermophyta — noun plants having naked seeds not enclosed in an ovary; in some systems considered a class (Gymnospermae) and in others a division (Gymnospermophyta); comprises three subdivisions (or classes): Cycadophytina (class Cycadopsida) and Gnetophytina… …   Useful english dictionary

  • Lyginopteridales — noun fossil gymnospermous trees or climbing plants from the Devonian: seed ferns • Syn: ↑Cycadofilicales, ↑order Cycadofilicales, ↑order Lyginopteridales • Hypernyms: ↑plant order • Member Holonyms: ↑Pteridospermopsida …   Useful english dictionary

  • order Cycadofilicales — noun fossil gymnospermous trees or climbing plants from the Devonian: seed ferns • Syn: ↑Cycadofilicales, ↑Lyginopteridales, ↑order Lyginopteridales • Hypernyms: ↑plant order • Member Holonyms: ↑Pteridospermopsida, ↑ …   Useful english dictionary

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