The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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... Conifers of the Coal - formation ( four Species ) Trigonocarpum Sternbergia Walchia imbricatula Foliage of the Jurassic Period . Podozamites Salisburia Sequoia Populus primæva Stercalia and Laurophyllum Vegetation of the Cretaceous ...
... Conifers of the Coal - formation ( four Species ) Trigonocarpum Sternbergia Walchia imbricatula Foliage of the Jurassic Period . Podozamites Salisburia Sequoia Populus primæva Stercalia and Laurophyllum Vegetation of the Cretaceous ...
Pagina 15
... Conifers ( Dadoxyl Quangondianum ) in which the material of the cell - wa has been converted into graphite , while their caviti have been filled with calcareous spar and quartz , t finest structures being preserved quite as well as in ...
... Conifers ( Dadoxyl Quangondianum ) in which the material of the cell - wa has been converted into graphite , while their caviti have been filled with calcareous spar and quartz , t finest structures being preserved quite as well as in ...
Pagina 26
... coniferous and lepidodendroid trees . May it not have been a survivor of an old arboreal flora extending back even to the Laurentian itself ? Multitudes of markings occurring on the surfaces of the older rocks have been referred to the ...
... coniferous and lepidodendroid trees . May it not have been a survivor of an old arboreal flora extending back even to the Laurentian itself ? Multitudes of markings occurring on the surfaces of the older rocks have been referred to the ...
Pagina 29
... Conifers of the genus Brachyphyllum . Nereites and Planulites are tracks and burrows of worms , with or without marks of setæ , and some of the * The name Bilobites was originally proposed by De Kay for a bivalve shell ( Conocardium ) ...
... Conifers of the genus Brachyphyllum . Nereites and Planulites are tracks and burrows of worms , with or without marks of setæ , and some of the * The name Bilobites was originally proposed by De Kay for a bivalve shell ( Conocardium ) ...
Pagina 79
... conifer . A , Fragment showing Sternbergia pith and wood ; a , medullary sheath ; b , pith ; c , wood ; d , section ... coniferous trees , and which is a great improvement on the barred tissue already referred to , affording a far ...
... conifer . A , Fragment showing Sternbergia pith and wood ; a , medullary sheath ; b , pith ; c , wood ; d , section ... coniferous trees , and which is a great improvement on the barred tissue already referred to , affording a far ...
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Termeni și expresii frecvente
acrogens aërial roots Algæ allied America appear arctic areoles bark beds belong bituminous branches Brongniart bundles Calamites Canada Carboniferous Caulopteris cells cellular character climate coal coal-formation conifers Cordaites cycads cylinder Dadoxylon Dawson Demy 8vo described Devonian diameter Eocene Erian Europe exogenous Fcap ferns flora formation forms fossil plants fronds fructification fruit Gaspé genera genus Geological Society graphite Greenland hemisphere Illustrations Journal Laramie Laurentian leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores medullary rays Mesozoic Middle modern Nova Scotia occur outer Paleozoic period Permian petioles pines pinnate pinnules pith present probably Prof Psilophyton referred resemble Rhizocarps ribbed rocks sandstones scalariform scars Second Edition Sequoia shales Sigillaria Silurian similar Small crown 8vo species specimens Sphenophyllum Sporangites spore-cases spores sporocarps stems Sternbergia structure Tertiary thick Third Edition tion tissue tree-ferns trees trunks Upper Cretaceous vascular vegetable vols Williamson wood woody
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