The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 25
... " Erian Flora of Canada , " 1871 and 1882 , for full description of these fossils . " American Journal of Science , " 1878 . gard the supposed stigmaria - like roots as really stems LAURENTIAN AND EARLY PALEOZOIC . 25.
... " Erian Flora of Canada , " 1871 and 1882 , for full description of these fossils . " American Journal of Science , " 1878 . gard the supposed stigmaria - like roots as really stems LAURENTIAN AND EARLY PALEOZOIC . 25.
Pagina 26
Sir John William Dawson. gard the supposed stigmaria - like roots as really stems , and the supposed rootlets as short , spine - like rudiment- ary leaves . All such comparisons must , however , in the mean time be regarded as ...
Sir John William Dawson. gard the supposed stigmaria - like roots as really stems , and the supposed rootlets as short , spine - like rudiment- ary leaves . All such comparisons must , however , in the mean time be regarded as ...
Pagina 28
... Nova Scotia , to illustrate supposed Algæ . Climactichnites , from the same beds which afford Pro- tichnites. * " Canadian Naturalist , " vol . vii . FIG . 9. Astropolithon Hindii , an organism of the. 28 THE GEOLOGICAL HISTORY OF PLANTS .
... Nova Scotia , to illustrate supposed Algæ . Climactichnites , from the same beds which afford Pro- tichnites. * " Canadian Naturalist , " vol . vii . FIG . 9. Astropolithon Hindii , an organism of the. 28 THE GEOLOGICAL HISTORY OF PLANTS .
Pagina 29
... supposed Algae was an error , but this is of the less consequence , as these are not true plants but only animal trails . markings referred to Palæochorda , Palæophycus , and Scolithus have. LAURENTIAN AND EARLY PALEOZOIC . 29.
... supposed Algae was an error , but this is of the less consequence , as these are not true plants but only animal trails . markings referred to Palæochorda , Palæophycus , and Scolithus have. LAURENTIAN AND EARLY PALEOZOIC . 29.
Pagina 30
... supposed Cambrian Fucoid , but probably an animal trail . as radiating markings referable to Scotolithus , Gyrophyllites , and As- terophycus , are ex- plained by the branch- ing burrows of worms illustrated by Nathorst and the author ...
... supposed Cambrian Fucoid , but probably an animal trail . as radiating markings referable to Scotolithus , Gyrophyllites , and As- terophycus , are ex- plained by the branch- ing burrows of worms illustrated by Nathorst and the author ...
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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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