group Pteridospermae

group Pteridospermae
noun
used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales
Hypernyms: ↑taxonomic group, ↑taxonomic category, ↑taxon

Useful english dictionary. 2012.

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  • group Pteridospermaphyta — noun used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales • Syn: ↑Pteridospermae, ↑group Pteridospermae, ↑Pteridospermaphyta • Hypernyms: ↑taxonomic group, ↑taxonomic category,… …   Useful english dictionary

  • Pteridospermae — noun used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales • Syn: ↑group Pteridospermae, ↑Pteridospermaphyta, ↑group Pteridospermaphyta • Hypernyms: ↑taxonomic group, ↑taxonomic… …   Useful english dictionary

  • taxonomic group — noun animal or plant group having natural relations • Syn: ↑taxonomic category, ↑taxon • Hypernyms: ↑biological group • Hyponyms: ↑Adapid, ↑Adapid group, ↑ …   Useful english dictionary

  • taxonomic category — noun animal or plant group having natural relations • Syn: ↑taxonomic group, ↑taxon • Hypernyms: ↑biological group • Hyponyms: ↑Adapid, ↑Adapid group, ↑Om …   Useful english dictionary

  • Pteridospermaphyta — noun used in some classification systems: a group of extinct fossil gymnosperms coextensive with the order Cycadofilicales • Syn: ↑Pteridospermae, ↑group Pteridospermae, ↑group Pteridospermaphyta • Hypernyms: ↑taxonomic group, ↑taxonomic category …   Useful english dictionary

  • pteridosperm — noun an extinct seed producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) • Syn: ↑seed fern • Hypernyms: ↑gymnosperm …   Useful english dictionary

  • seed fern — noun an extinct seed producing fernlike plant of the order Cycadofilicales (or group Pteridospermae) • Syn: ↑pteridosperm • Hypernyms: ↑gymnosperm * * * noun : a plant or fossil of the order Cycadofilicales : pteridosperm * * * any of various… …   Useful english dictionary

  • Spermatophyte — Taxobox name = Seed Plants image width = 200px image caption = Welwitschia mirabilis a member of the Gnetophyta fossil range = Devonian? or earlier to recent regnum = Plantae subdivision ranks = Divisions subdivision = *Pinophyta *Cycadophyta… …   Wikipedia

  • Hugh Hamshaw Thomas — FRS (* 29. Mai 1885 in Wrexham, Denbighshire, Wales; † 30. Juni 1962 in Cambridge, England), war ein britischer Paläobotaniker, der grundlegende Forschungen über die Samenfarne des Mesozoikums und die Evolution der Pflanzen durchführte. Sein… …   Deutsch Wikipedia

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