The Ancient Life-history of the Earth: A Comprehensive Outline of the Principles and Leading Facts of Palæontological ScienceD. Appleton & Company, 1878 - 407 páginas |
Dentro del libro
Resultados 1-5 de 69
Página 1
... the forms of animal and vegetable life which peopled its surface in bygone epochs , and it is found impossible adequately to com- * Gr . gẽ , the earth ; logos , a discourse . * prehend the former , unless we possess some knowledge.
... the forms of animal and vegetable life which peopled its surface in bygone epochs , and it is found impossible adequately to com- * Gr . gẽ , the earth ; logos , a discourse . * prehend the former , unless we possess some knowledge.
Página 7
... surface have been produced as the ultimate result of an almost endless succession of precedent changes . Palæontology teaches us , though not yet in such assured accents , the same lesson : Our present animals and plants have not been ...
... surface have been produced as the ultimate result of an almost endless succession of precedent changes . Palæontology teaches us , though not yet in such assured accents , the same lesson : Our present animals and plants have not been ...
Página 10
... surfaces of the globe or inhabited its waters ; it would enable us to determine precisely their succes- sion in time ; and it would place in our hands an unfailing key to the problems of evolution . Unfortunately , from causes which ...
... surfaces of the globe or inhabited its waters ; it would enable us to determine precisely their succes- sion in time ; and it would place in our hands an unfailing key to the problems of evolution . Unfortunately , from causes which ...
Página 14
... surface of the earth , which they only reach as the result of volcanic action ; they are generally destitute of distinct " stratification , " or arrangement in successive layers ; and they do not contain fossils , except in the ...
... surface of the earth , which they only reach as the result of volcanic action ; they are generally destitute of distinct " stratification , " or arrangement in successive layers ; and they do not contain fossils , except in the ...
Página 15
... surface of the earth , and , as implied by one of their names , are invariably deposited in water . They are produced by vital or chemical action , or are formed from the " sediment " produced by the disintegra- tion and reconstruction ...
... surface of the earth , and , as implied by one of their names , are invariably deposited in water . They are produced by vital or chemical action , or are formed from the " sediment " produced by the disintegra- tion and reconstruction ...
Otras ediciones - Ver todas
Términos y frases comunes
abundant allied Amongst ancient animals attain beds belong Birds Bivalves bones bony Brachiopods Britain calcareous Cambrian carbonate Carboniferous Chalk characteristic clays coal Coal-measures composed consists contain Corals Cretaceous Crinoids Crustaceans Cycads deposits Devonian Elephants Eocene Europe existing species extinct genus feet fishes Foraminifera formation forms fossils Ganoids genera genus Geol geological gigantic Glacial Graptolites Greensand horny Journ Jurassic known Lastly Laurentian less Lias lime limestones living Lower Silurian Mammals marine Mesozoic Miocene Mollusca natural North America numerous occur Old Red Sandstone Oolitic organic origin Owen Palæontographical Society Paleozoic period Permian plants plates Pliocene portion possessed Post-Pliocene present day principal Pterosaurs Quadrupeds regarded represented Reptiles resembling Rhinoceros rocks sands shales shell singular siphuncle skeleton skull Slates strata structure surface tail teeth Tertiary thickness tion tooth Trias Triassic Trilobites types Univalves Upper Miocene Upper Silurian vertebræ whilst yielded the remains
Pasajes populares
Página 244 - Ichthyosaurus to cut through the waves. May it not therefore be concluded (since, in addition to these circumstances, its respiration must have required frequent access of air), that it swam upon or near the surface, arching back its long neck like a swan, and occasionally darting it down at the fish which happened to float within its reach.
Página 366 - Description of the skeleton of an extinct gigantic sloth, Mylodon robustus, Owen, with observations on the osteology, natural affinities, and probable habits of the megatherioid quadrupeds in general, London, 4to., 176 pp., 24 pis., 1842.
Página 363 - Eagles, owls, and gulls pursue their prey along the sea-coast; ptarmigan run in troops amongst the bushes; little snipes are busy along the brooks, and in the morasses; the social crows seek the neighbourhood of men's habitations ; and, when the sun shines in spring, one may even sometimes hear the cheerful note of the finch, and in autumn, that of the thrush...
Página 291 - ... formation occupies a middle place in the Eocene series, we are struck with the comparatively modern date to which some of the greatest revolutions in the physical geography of Europe, Asia, and northern Africa must be referred. All the mountain chains, such as the Alps, Pyrenees, Carpathians, and Himalayas, into the composition of whose central and loftiest parts the nummulitic strata enter bodily, could have had no existence till after the middle Eocene period."— Manual, p. 232. A still more...