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 x
... fossils , . CHAPTER VI . The biological relations of fossils - Extinction of life - forms - Geolo- gical range of different species — Persistent types of life - Modern origin of existing animals and plants - Reference of fossil forms to ...
... fossils , . CHAPTER VI . The biological relations of fossils - Extinction of life - forms - Geolo- gical range of different species — Persistent types of life - Modern origin of existing animals and plants - Reference of fossil forms to ...
Página xiii
... fossils , 323-333 CHAPTER XXI . The Post - Pliocene period - Division of the Quaternary deposits into Post - Pliocene and Recent - Relations of the Post - Pliocene de- posits of the northern hemisphere to the " Glacial period " - Pre ...
... fossils , 323-333 CHAPTER XXI . The Post - Pliocene period - Division of the Quaternary deposits into Post - Pliocene and Recent - Relations of the Post - Pliocene de- posits of the northern hemisphere to the " Glacial period " - Pre ...
Página xv
... fossil Conifer , 3. Microscopic section of the wood of the Larch , 4. Section of Carboniferous strata , Kinghorn ... fossils , 33. Fragment of Dictyonema sociale , 34. Generalised section of the Lower Silurian rocks of Wales , 30 35 ...
... fossil Conifer , 3. Microscopic section of the wood of the Larch , 4. Section of Carboniferous strata , Kinghorn ... fossils , 33. Fragment of Dictyonema sociale , 34. Generalised section of the Lower Silurian rocks of Wales , 30 35 ...
Página 11
... fossils , " * or " petrifactions . " In most cases , as can be readily under- stood , fossils are the actual hard parts of animals and plants which were in existence when the rock in which they are now found was being deposited . Most ...
... fossils , " * or " petrifactions . " In most cases , as can be readily under- stood , fossils are the actual hard parts of animals and plants which were in existence when the rock in which they are now found was being deposited . Most ...
Página 12
... fossils , as a rule , least changed from their former condition ; but the original structure is often more or less com- pletely retained in some of the fossils from even the most ancient formations . In the second place , we very ...
... fossils , as a rule , least changed from their former condition ; but the original structure is often more or less com- pletely retained in some of the fossils from even the most ancient formations . In the second place , we very ...
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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...