The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
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Pagina
... FOSSIL FLORAS APPENDIX . I. COMPARATIVE VIEW OF PALEOZOIC FLORAS PAGE 219 . 237 . 273 II . HEER'S LATEST STATEMENTS ON THE GREENLAND FLORA . 281 III . MINERALISATION OF FOSSIL PLANTS . € 284 IV . GENERAL WORKS ON PALEOBOTANY . € 286 ...
... FOSSIL FLORAS APPENDIX . I. COMPARATIVE VIEW OF PALEOZOIC FLORAS PAGE 219 . 237 . 273 II . HEER'S LATEST STATEMENTS ON THE GREENLAND FLORA . 281 III . MINERALISATION OF FOSSIL PLANTS . € 284 IV . GENERAL WORKS ON PALEOBOTANY . € 286 ...
Pagina 1
... fossil plants , began to collect and work at these as a boy , in connection with botanical and geological pursuits . He has thus been engaged in the study of fossil plants for nearly half a century , and , while he has published much on ...
... fossil plants , began to collect and work at these as a boy , in connection with botanical and geological pursuits . He has thus been engaged in the study of fossil plants for nearly half a century , and , while he has published much on ...
Pagina 3
... fossil remains embedded in the several layers and placing these in chronological order , we obtain in like manner histories of animal and plant life parallel to the physical changes indicated by the beds themselves . The facts as to the ...
... fossil remains embedded in the several layers and placing these in chronological order , we obtain in like manner histories of animal and plant life parallel to the physical changes indicated by the beds themselves . The facts as to the ...
Pagina 5
... changes in the astronomical relations and period of the earth , and the form of its orbit . We know by the evidence of * * Croll , " Climate and Time . " fossil plants that changes of this kind have occurred so GEOLOGICAL CHRONOLOGY . 5.
... changes in the astronomical relations and period of the earth , and the form of its orbit . We know by the evidence of * * Croll , " Climate and Time . " fossil plants that changes of this kind have occurred so GEOLOGICAL CHRONOLOGY . 5.
Pagina 6
Sir John William Dawson. fossil plants that changes of this kind have occurred so great as , on the one hand , to permit the plants of warm temperate regions to exist within the Arctic Circle ; and , on the other , to drive these plants ...
Sir John William Dawson. fossil plants that changes of this kind have occurred so great as , on the one hand , to permit the plants of warm temperate regions to exist within the Arctic Circle ; and , on the other , to drive these plants ...
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Termeni și expresii frecvente
abundant Acrogens aërial roots Algæ allied America animal appear arctic areoles bark beds belong bituminous branches Brongniart Calamites Canada carbon Carboniferous Caulopteris cellular character clay climate coal coal-formation conifers Cordaites cycads Dadoxylon Dawson deposits described Devonian diameter dicotyledonous Eocene Europe exogenous fact ferns flora formation forms fossil fossil plants fronds fructification fruit Gaspé genera genus Geological Society graphite Greenland gymnospermous Heer hemisphere Journal known land land-plants Laramie Laurentian leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores matter medullary rays Mesozoic Miocene modern Nematophyton northern Nova Scotia occur outer Palæozoic period Permian pines pinnules pith present preserved probably Prof Psilophyton referred remarkable resemble Rhizocarps rocks sandstones scalariform scars Sequoia shales Sigillaria Silurian similar species specimens Sphenophyllum Sporangites spore-cases spores sporocarps stems Sternbergia structure surface Tertiary thick tion tissue tree-ferns trees trunks types Upper Cretaceous vascular vegetable wood woody