The Ancient Life-history of the Earth: A Comprehensive Outline of the Principles and Leading Facts of Palæontological ScienceD. Appleton & Company, 1878 - 407 páginas |
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Página 5
... nearly ex- tinct , and its place is taken by the modern doctrine of " Con- tinuity " or " Uniformity " -a doctrine with which the name of Lyell must ever remain imperishably associated . The fundamental thesis of the doctrine of ...
... nearly ex- tinct , and its place is taken by the modern doctrine of " Con- tinuity " or " Uniformity " -a doctrine with which the name of Lyell must ever remain imperishably associated . The fundamental thesis of the doctrine of ...
Página 25
... nearly extinguished , and the few known survivors seem to have retired to great depths in the ocean ; but the two latter still actively carry on the work of lime - making , the former being very largely helped in their operations by ...
... nearly extinguished , and the few known survivors seem to have retired to great depths in the ocean ; but the two latter still actively carry on the work of lime - making , the former being very largely helped in their operations by ...
Página 26
... nearly devoid of traces of life , are found , when properly examined , to be also composed of the remains of various organisms . All the commoner lime- stones , in fact , from the Lower Silurian period onwards , can be easily proved to ...
... nearly devoid of traces of life , are found , when properly examined , to be also composed of the remains of various organisms . All the commoner lime- stones , in fact , from the Lower Silurian period onwards , can be easily proved to ...
Página 29
... nearly spherical and are in tolerably close contact , the rock looks very like the roe of a fish , and the name of " oolite " or egg - stone " is in allusion to this . When the grains are of the size of peas or upwards , the rock is ...
... nearly spherical and are in tolerably close contact , the rock looks very like the roe of a fish , and the name of " oolite " or egg - stone " is in allusion to this . When the grains are of the size of peas or upwards , the rock is ...
Página 44
... nearly identical , fossils , however widely separated they may be from one another in point of actual distance , are ordinarily believed to have been deposited during the same period of the earth's history . This belief , indeed ...
... nearly identical , fossils , however widely separated they may be from one another in point of actual distance , are ordinarily believed to have been deposited during the same period of the earth's history . This belief , indeed ...
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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
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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...