The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 31
... their want of nodes or append-. FIG . 9. - Astropolithon Hindii , an organism of the Lower Cain- brian of Nova Scotia , possibly vegetable . FIG . 10. Carboniferous rill- mark ( Nova Scotia ). LAURENTIAN AND EARLY PALÆOZOIC . 31.
... their want of nodes or append-. FIG . 9. - Astropolithon Hindii , an organism of the Lower Cain- brian of Nova Scotia , possibly vegetable . FIG . 10. Carboniferous rill- mark ( Nova Scotia ). LAURENTIAN AND EARLY PALÆOZOIC . 31.
Pagina 33
... Carboniferous shales and argillaceous sandstones , and even more elaborately on the mod- ern mud - banks of the Bay of Fundy . Some of these simulate ferns and fronds of Laminariæ , and others resemble roots , fucoids allied to ...
... Carboniferous shales and argillaceous sandstones , and even more elaborately on the mod- ern mud - banks of the Bay of Fundy . Some of these simulate ferns and fronds of Laminariæ , and others resemble roots , fucoids allied to ...
Pagina 40
... Carboniferous periods , similar to the naked eye , abound in such evi- dence . It is also to be observed that , on the surfaces of beds of sandstone in the Upper Cambrian , carbonaceous débris. FIG . 14. Silurian vegetation restored ...
... Carboniferous periods , similar to the naked eye , abound in such evi- dence . It is also to be observed that , on the surfaces of beds of sandstone in the Upper Cambrian , carbonaceous débris. FIG . 14. Silurian vegetation restored ...
Pagina 48
... Carboniferous , though both have been united by Heer under his so - called " Ursa Stage , " in which he has grouped the characteristic plants of two distinct periods . This has recently been fully established by the researches of ...
... Carboniferous , though both have been united by Heer under his so - called " Ursa Stage , " in which he has grouped the characteristic plants of two distinct periods . This has recently been fully established by the researches of ...
Pagina 50
... Carboniferous ( a Lepidodendron allied to L. primævum ) , and to those from Brazil described by Carruthers under the name Flemingites , as well as to those described by Huxley from certain English coals , and to those of the Tasmanite ...
... Carboniferous ( a Lepidodendron allied to L. primævum ) , and to those from Brazil described by Carruthers under the name Flemingites , as well as to those described by Huxley from certain English coals , and to those of the Tasmanite ...
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Termeni și expresii frecvente
Acrogens aërial roots Algæ allied America appear Archæopteris arctic areoles bark beds belong bituminous branches Brongniart bundles Calamites Canada Carboniferous Caulopteris cellular character clay climate coal coal-formation cones conifers Cordaites cycads cylinder Dadoxylon Dawson Demy 8vo deposits described Devonian dicotyledonous Eocene Erian Europe exogenous Fcap ferns flora formation forms fossil plants fronds fructification fruit Gaspé genera genus Geological Society Greenland Heer hemisphere Illustrations land Laramie leaf-bases leaf-scars leaves Lepidodendron Lepidophloios Lesquereux limestone Lower Carboniferous Lycopods macrospores medullary rays Mesozoic Middle Miocene modern northern Nova Scotia occur outer Palæozoic period Permian pines pinnules pith present probably Prof Psilophyton referred resemble Rhizocarps ribbed rocks sandstones scalariform Sequoia shales Sigillaria Silurian similar Small crown 8vo species specimens Sphenophyllum Sphenopteris Sporangites spore-cases spores sporocarps stems Sternbergia structure Tertiary thick tion tissue transverse tree-ferns trees trunks types Upper Cretaceous vascular scar vegetable wood woody
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