The Geological History of PlantsK. Paul, Trench, 1888 - 290 pagini |
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Pagina 7
... belong to this group . On referring to the geological table , it will be seen that there is a certain rough correspondence between the order of rank of plants and the order of their appearance in time . The oldest plants that we ...
... belong to this group . On referring to the geological table , it will be seen that there is a certain rough correspondence between the order of rank of plants and the order of their appearance in time . The oldest plants that we ...
Pagina 30
... belong to im- pressions explicable by the trails of drifting sea - weeds , the tail - markings of Crustacea , and the ruts ploughed by bivalve mollusks , and occurring in the Silu- rian , Erian , and Carboniferous rocks . Among these ...
... belong to im- pressions explicable by the trails of drifting sea - weeds , the tail - markings of Crustacea , and the ruts ploughed by bivalve mollusks , and occurring in the Silu- rian , Erian , and Carboniferous rocks . Among these ...
Pagina 57
... belong- ing to the Upper Erian . The recurrence of similar forms in the Tasmanite and white coal of Tasmania and Aus- tralia is another important fact of distribution . To this * Traquaria is to be distinguished from the calcareous ...
... belong- ing to the Upper Erian . The recurrence of similar forms in the Tasmanite and white coal of Tasmania and Aus- tralia is another important fact of distribution . To this * Traquaria is to be distinguished from the calcareous ...
Pagina 62
... belong to a plant so humble in its affinities is one of the strange anomalies presented by the old world , and of which we shall find many similar instances . The fruit of Spheno- phyllum was borne in spikes , with little whorls of ...
... belong to a plant so humble in its affinities is one of the strange anomalies presented by the old world , and of which we shall find many similar instances . The fruit of Spheno- phyllum was borne in spikes , with little whorls of ...
Pagina 72
... belong to sev- eral of the genera found in the Carboniferous , though some are peculiar to the Erian . Of the latter , the best known are per- haps those of the genus Archa- opteris ( Fig . 24 ) , so abundant in the plant - beds of ...
... belong to sev- eral of the genera found in the Carboniferous , though some are peculiar to the Erian . Of the latter , the best known are per- haps those of the genus Archa- opteris ( Fig . 24 ) , so abundant in the plant - beds of ...
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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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