The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 196
... Laramie beds I determined many years ago nuts of the Trapa or water - chestnut , and subsequently Lesquereux found , in beds in the United States , leaves which he referred to the same genus . Later , I found in collections made on the ...
... Laramie beds I determined many years ago nuts of the Trapa or water - chestnut , and subsequently Lesquereux found , in beds in the United States , leaves which he referred to the same genus . Later , I found in collections made on the ...
Pagina 202
... Laramie or in the Upper Cretaceous of British Columbia . In the paper above quoted , Newberry describes three new species from the Amboy clays , one of which he considers iden- tical with a Greenland form referred by Heer to L. Meeki of ...
... Laramie or in the Upper Cretaceous of British Columbia . In the paper above quoted , Newberry describes three new species from the Amboy clays , one of which he considers iden- tical with a Greenland form referred by Heer to L. Meeki of ...
Pagina 208
... Laramie series . These beds were deposited in fresh or brackish water , in an internal sea or group of lakes and swamps , when the continent was lower than at present . They have been studied both in the United States * and Canada ; 208 ...
... Laramie series . These beds were deposited in fresh or brackish water , in an internal sea or group of lakes and swamps , when the continent was lower than at present . They have been studied both in the United States * and Canada ; 208 ...
Pagina 209
... Laramie series , formerly known as the lignitic or lignite Tertiary , oc- curs , with the exception of a few outliers , in two large areas west of the 100th meridian , and separated from each other by a tract of older Cretaceous rocks ...
... Laramie series , formerly known as the lignitic or lignite Tertiary , oc- curs , with the exception of a few outliers , in two large areas west of the 100th meridian , and separated from each other by a tract of older Cretaceous rocks ...
Pagina 210
... Laramie or St. Mary River series , corresponding in its character and fossils to the Lower or Bad Lands division of the other area . ( 2 ) A middle division , the Willow Creek beds , consisting of clays , mostly reddish , and not recog ...
... Laramie or St. Mary River series , corresponding in its character and fossils to the Lower or Bad Lands division of the other area . ( 2 ) A middle division , the Willow Creek beds , consisting of clays , mostly reddish , and not recog ...
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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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