The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
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Sir John William Dawson. 10 } GEOLOGICAL FORMATIONS . PLEISTOCENE on MODERN . MIO - PLIOCENE.
Sir John William Dawson. 10 } GEOLOGICAL FORMATIONS . PLEISTOCENE on MODERN . MIO - PLIOCENE.
Pagina
Sir John William Dawson. GEOLOGICAL CRYPTOGAMS FORMATIONS . NEMATOPHYTEE RHIZOCARPE PLEISTOCENE MODERN . MIO - PLIOCENE . EOZOIC PALEOZOIC MESOZOIC CENOZOIC EOCENE . CRETACEOUS . JURA - TRIAS . PERMO - CAR = BONIFEROUS . DEVONIAN ...
Sir John William Dawson. GEOLOGICAL CRYPTOGAMS FORMATIONS . NEMATOPHYTEE RHIZOCARPE PLEISTOCENE MODERN . MIO - PLIOCENE . EOZOIC PALEOZOIC MESOZOIC CENOZOIC EOCENE . CRETACEOUS . JURA - TRIAS . PERMO - CAR = BONIFEROUS . DEVONIAN ...
Pagina 4
... Pleistocene , Pliocene , Miocene , Eocene . Cretaceous , Jurassic , Triassic . Permian , Angiosperms and Palms dominant . Cycads and Pines dominant . Carboniferous , Erian , Silurian , Ordovician , Cambrian , Huronian ( Upper ) ...
... Pleistocene , Pliocene , Miocene , Eocene . Cretaceous , Jurassic , Triassic . Permian , Angiosperms and Palms dominant . Cycads and Pines dominant . Carboniferous , Erian , Silurian , Ordovician , Cambrian , Huronian ( Upper ) ...
Pagina 223
... Pleistocene . It is certain that throughout the later Miocene and Pliocene the area of land in the northern hemisphere was increasing , and the large and varied continents were tenanted by the noblest vege- tation and the grandest forms ...
... Pleistocene . It is certain that throughout the later Miocene and Pliocene the area of land in the northern hemisphere was increasing , and the large and varied continents were tenanted by the noblest vege- tation and the grandest forms ...
Pagina 228
... Pleistocene , Can- ada . FIG . 78. - Populus balsamifera . Pleistocene , Canada. 228 THE GEOLOGICAL HISTORY OF PLANTS .
... Pleistocene , Can- ada . FIG . 78. - Populus balsamifera . Pleistocene , Canada. 228 THE GEOLOGICAL HISTORY OF PLANTS .
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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