The Geological History of PlantsD. Appleton & Company, 1892 - 294 pagini |
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Pagina
... Trees ( two Figures ) 118 , 119 Lepidodendron . 120 Lepidophloios . . 121 Asterophyllites , & c . . 122 Calamites ( five Figures ) . 123-125 Ferns of the Coal - formation ( six Figures ) 126-129 Noeggerathia dispar 130 Cordaites . 131 ...
... Trees ( two Figures ) 118 , 119 Lepidodendron . 120 Lepidophloios . . 121 Asterophyllites , & c . . 122 Calamites ( five Figures ) . 123-125 Ferns of the Coal - formation ( six Figures ) 126-129 Noeggerathia dispar 130 Cordaites . 131 ...
Pagina 7
... trees of temperate climates 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 ...
... trees of temperate climates 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 ...
Pagina 16
... Devonian of Gaspé , when he met the late Professor Agassiz , and remarked that the specimen was the re- mains of a Devonian tree contemporaneous with his fishes of that age . " How I wish I 16 THE GEOLOGICAL HISTORY OF PLANTS .
... Devonian of Gaspé , when he met the late Professor Agassiz , and remarked that the specimen was the re- mains of a Devonian tree contemporaneous with his fishes of that age . " How I wish I 16 THE GEOLOGICAL HISTORY OF PLANTS .
Pagina 18
... trees . This would be quite in harmony with what is observed in the development of other plants in primitive geological times ; and a little later in this his- tory we shall see that there is evidence in the flora of the Silurian of a ...
... trees . This would be quite in harmony with what is observed in the development of other plants in primitive geological times ; and a little later in this his- tory we shall see that there is evidence in the flora of the Silurian of a ...
Pagina 21
... tree from the Lower Erian of Gaspé , under the name Prototaxites , but for which I now prefer the name Nematophy- ton . When in Lon- MAM FIG . 1. - Protannularia Harknessii ( Nichol- son ) , a probable Rhizocarp of the Ordo- vician ...
... tree from the Lower Erian of Gaspé , under the name Prototaxites , but for which I now prefer the name Nematophy- ton . When in Lon- MAM FIG . 1. - Protannularia Harknessii ( Nichol- son ) , a probable Rhizocarp of the Ordo- vician ...
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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