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 26
... appear com- pact , more or less crystalline , and 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 ...
... appear com- pact , more or less crystalline , and 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 ...
Página 31
... appears , in fact , that decaying animal matter has a singular power of determining the precipitation around it of mineral salts dis- solved in water . Thus , when any animal bodies are undergo- ing decay at the bottom of the sea , they ...
... appears , in fact , that decaying animal matter has a singular power of determining the precipitation around it of mineral salts dis- solved in water . Thus , when any animal bodies are undergo- ing decay at the bottom of the sea , they ...
Página 35
... appear to be grounds for believing that the solvent power of the sea water over lime is considerably increased at great depths . If , therefore , we suppose the shells of Foraminifera to be in course of deposition over the floor of the ...
... appear to be grounds for believing that the solvent power of the sea water over lime is considerably increased at great depths . If , therefore , we suppose the shells of Foraminifera to be in course of deposition over the floor of the ...
Página 40
... appear to be a clear and decisive discordance between the physical and the paleontological evidence as to the age of a given series of beds , it is the former that is to be distrusted rather than the latter . The records of geological ...
... appear to be a clear and decisive discordance between the physical and the paleontological evidence as to the age of a given series of beds , it is the former that is to be distrusted rather than the latter . The records of geological ...
Página 46
... appear , for the second time , as fossils in a set of beds widely separated from Europe . The second set of beds would , however , obviously not be strictly or literally contemporaneous with the first , but would be separated from them ...
... appear , for the second time , as fossils in a set of beds widely separated from Europe . The second set of beds would , however , obviously not be strictly or literally contemporaneous with the first , but would be separated from them ...
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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...