pteridosperms

См. также в других словарях:

• gymnosperm — gymnospermism, n. /jim neuh sperrm /, n. Bot. a vascular plant having seeds that are not enclosed in an ovary; a conifer or cycad. Cf. angiosperm. [1820 30; < NL gymnospermae name of type. See GYMNO , SPERM] * * * Any woody plant that reproduces… …   Universalium

• cycadophyte — ▪ plant Introduction       any member of a diverse collection of mostly extinct primitive gymnospermous plants. They probably had their origins among the progymnosperms of the Devonian Period (416 to 359 million years ago), possibly among a… …   Universalium

• Medullosales — Temporal range: Carboniferous–Permian …   Wikipedia

• Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… …   Wikipedia

• Pteridospermatophyta — † …   Wikipédia en Français

• Pteridospermatophyte — Pteridospermatophyta Pteridospermatophyta † …   Wikipédia en Français

• Ptéridospermes — Pteridospermatophyta Pteridospermatophyta † …   Wikipédia en Français

• Plant — For other uses, see Plant (disambiguation). Plants Temporal range: Early Cambrian to recent, but see text, 520–0 Ma …   Wikipedia

• Gnetophyta — Taxobox name = Gnetophyta image width = 240px image caption = Welwitschia mirabilis regnum = Plantae divisio = Gnetophyta classis = Gnetopsida subdivision ranks = Genera subdivision = * Gnetum * Welwitschia * Ephedra The plant division Gnetophyta …   Wikipedia

• Gymnosperm — Taxobox name = Gymnosperms fossil range = fossil range|370|0Devonian Recent image width = 150px image caption = White Spruce leaves (needles) regnum = Plantae subdivision ranks = Divisions subdivision = Pinophyta (or Coniferophyta) Conifers… …   Wikipedia

• Embryophyte — Land plants Temporal range: Late Silurian–Recent[1][2] (Spores from Dapingian (early Middle Ordovician) …   Wikipedia