Useful english dictionary. 2012.
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
