The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina
... 37 40 49 • 54 62 , 63 64 , 66 Lepidodendron Various Ferns . Archæopteris Caulopteris Megalopteris Calamites Asterophyllites Dadoxylon 65 66 72 , 73 74 75 76 77 78 79 X LIST OF ILLUSTRATIONS . Cordaites Erian Fruits Foliage from.
... 37 40 49 • 54 62 , 63 64 , 66 Lepidodendron Various Ferns . Archæopteris Caulopteris Megalopteris Calamites Asterophyllites Dadoxylon 65 66 72 , 73 74 75 76 77 78 79 X LIST OF ILLUSTRATIONS . Cordaites Erian Fruits Foliage from.
Pagina 79
... Dadoxylon Quangondianum , an Erian conifer . A , Fragment showing Sternbergia pith and wood ; a , medullary sheath ; b , pith ; c , wood ; d , section of pith . B , Wood - cell ; a , hexagonal areole ; b , pore . c , Longitudinal ...
... Dadoxylon Quangondianum , an Erian conifer . A , Fragment showing Sternbergia pith and wood ; a , medullary sheath ; b , pith ; c , wood ; d , section of pith . B , Wood - cell ; a , hexagonal areole ; b , pore . c , Longitudinal ...
Pagina 80
... Dadoxylon , as being more non - committal as to affinities than the others . * Many of these trees had very long internal pith - cylinders , with curious transverse tubulæ , and which , when preserved separately , have been named ...
... Dadoxylon , as being more non - committal as to affinities than the others . * Many of these trees had very long internal pith - cylinders , with curious transverse tubulæ , and which , when preserved separately , have been named ...
Pagina 96
... DADOXYLon , Unger . ( Araucarites of Goeppert , Araucarioxylon of Kraus . ) Large woody trunks , carbonised or silicified , and showing wood- cells with hexagonal areoles having oval pores inscribed in them , occur abundantly in some ...
... DADOXYLon , Unger . ( Araucarites of Goeppert , Araucarioxylon of Kraus . ) Large woody trunks , carbonised or silicified , and showing wood- cells with hexagonal areoles having oval pores inscribed in them , occur abundantly in some ...
Pagina 97
... Dadoxylon Ouangondianum , in the Erian sandstone of St. John , New Brunswick , hence named by those geologists the “ Dadoxylon sandstone . " A little later , similar wood was found by Prof. Hall and Prof. Newberry in the Hamilton group ...
... Dadoxylon Ouangondianum , in the Erian sandstone of St. John , New Brunswick , hence named by those geologists the “ Dadoxylon sandstone . " A little later , similar wood was found by Prof. Hall and Prof. Newberry in the Hamilton group ...
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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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