The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 53
Pagina 4
... Carboniferous , Erian , Silurian , Ordovician , Cambrian , Huronian ( Upper ) . Huronian ( Lower ) , Upper Laurentian , Middle Laurentian , Lower Laurentian . Acrogens and Gym- nosperms domi- nant . Protogens and Algæ . It will be ...
... Carboniferous , Erian , Silurian , Ordovician , Cambrian , Huronian ( Upper ) . Huronian ( Lower ) , Upper Laurentian , Middle Laurentian , Lower Laurentian . Acrogens and Gym- nosperms domi- nant . Protogens and Algæ . It will be ...
Pagina 13
... Lower Carboniferous limestone and shale of Dorchester and Hillsborough , New Brunswick , with an arrangement very similar to that of the veins of graphite ; and in the Que- bec rocks of Point Levi , veins attaining to a thickness of ...
... Lower Carboniferous limestone and shale of Dorchester and Hillsborough , New Brunswick , with an arrangement very similar to that of the veins of graphite ; and in the Que- bec rocks of Point Levi , veins attaining to a thickness of ...
Pagina 31
... Lower Cain- brian of Nova Scotia , possibly vegetable . FIG . 10. - Carboniferous rill- mark ( Nova Scotia. LAURENTIAN AND . EARLY PALEOZOIC . 31.
... Lower Cain- brian of Nova Scotia , possibly vegetable . FIG . 10. - Carboniferous rill- mark ( Nova Scotia. LAURENTIAN AND . EARLY PALEOZOIC . 31.
Pagina 33
... Lower Silurian . Rill - marks occur in very old rocks , but are perhaps most beautifully preserved in the Carboniferous shales and argillaceous sandstones , and even more elaborately on the mod- ern mud - banks of the Bay of Fundy ...
... Lower Silurian . Rill - marks occur in very old rocks , but are perhaps most beautifully preserved in the Carboniferous shales and argillaceous sandstones , and even more elaborately on the mod- ern mud - banks of the Bay of Fundy ...
Pagina 45
... Lower Carboniferous rocks , published in 1860 , * he enumerates twenty species as Silurian , but these are all admitted to be Algæ , and several of them are re- mains which may be fairly claimed by the zoologists as zoöphytes , or ...
... Lower Carboniferous rocks , published in 1860 , * he enumerates twenty species as Silurian , but these are all admitted to be Algæ , and several of them are re- mains which may be fairly claimed by the zoologists as zoöphytes , or ...
Alte ediții - Afișează-le pe toate
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