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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... side , and in its more intimate relations with Geology . In accordance with this object , the introductory portion of the work is devoted to a consideration of the general principles of Palæontology , and the bearings of this science ...
... side , and in its more intimate relations with Geology . In accordance with this object , the introductory portion of the work is devoted to a consideration of the general principles of Palæontology , and the bearings of this science ...
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... side . Dealing , as it does , wholly with the consideration of such living beings as do not belong exclusively to the present order of things , Palæontology is , in reality , a branch of Natu- ral History , and may be regarded as ...
... side . Dealing , as it does , wholly with the consideration of such living beings as do not belong exclusively to the present order of things , Palæontology is , in reality , a branch of Natu- ral History , and may be regarded as ...
Página 38
... sides - that the paleontological arrangement of the strata would coincide in its details with the stratigraphical or physical arrangement . Happily for science , there is no such division between the palæontologist and the physical ...
... sides - that the paleontological arrangement of the strata would coincide in its details with the stratigraphical or physical arrangement . Happily for science , there is no such division between the palæontologist and the physical ...
Página 84
... side of the head are placed the eyes , which are generally crescentic in shape , and resemble the eyes of insects and many existing Crustaceans in being " compound , " or made up of numerous simple eyes aggregated together . So ...
... side of the head are placed the eyes , which are generally crescentic in shape , and resemble the eyes of insects and many existing Crustaceans in being " compound , " or made up of numerous simple eyes aggregated together . So ...
Página 85
... side ; but this is also wanting in some of the Cambrian species . The backward angles of the head - shield , also , are often prolonged into spines , which sometimes reach a great length . Following the head - shield behind , we have a ...
... side ; but this is also wanting in some of the Cambrian species . The backward angles of the head - shield , also , are often prolonged into spines , which sometimes reach a great length . Following the head - shield behind , we have a ...
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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 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...