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 xviii
... Teeth of Iguanodon , 278 frons and of Mastodon 210. Skull of Mosasaurus Sivalensis , 321 Camperi , 279 248 . Jaw of Pliopithecus , 323 211. Chelone Benstedi , 280 249 . Rhinoceros Etruscus and 212. Jaws and vertebræ of R. megarhinus ...
... Teeth of Iguanodon , 278 frons and of Mastodon 210. Skull of Mosasaurus Sivalensis , 321 Camperi , 279 248 . Jaw of Pliopithecus , 323 211. Chelone Benstedi , 280 249 . Rhinoceros Etruscus and 212. Jaws and vertebræ of R. megarhinus ...
Página 110
... teeth and sockets , and there is a straight hinge - line . The beaks are also separated by a distinct space ( " hinge - area " ) , formed in part by each valve , which is perforated by a triangular opening , through which , in the ...
... teeth and sockets , and there is a straight hinge - line . The beaks are also separated by a distinct space ( " hinge - area " ) , formed in part by each valve , which is perforated by a triangular opening , through which , in the ...
Página 114
... teeth of fishes allied to the Lampreys ; but Owen came to the con- clusion that they probably belonged to Invertebrates . The recent investigation of a vast number of similar but slightly larger bodies , of very various forms , in the ...
... teeth of fishes allied to the Lampreys ; but Owen came to the con- clusion that they probably belonged to Invertebrates . The recent investigation of a vast number of similar but slightly larger bodies , of very various forms , in the ...
Página 124
... teeth so as to act as jaws , and are flattened and widened out towards their extremities so as to officiate as swimming - paddles . The hinder extremity of the body is com- posed of thirteen rings , which have no legs attached to them ...
... teeth so as to act as jaws , and are flattened and widened out towards their extremities so as to officiate as swimming - paddles . The hinder extremity of the body is com- posed of thirteen rings , which have no legs attached to them ...
Página 131
... teeth of fishes or not , we are justified in ex- pecting that unequivocal remains of this group of animals will still be found in the Lower Silurian . It is interesting , also , to note that the first appearance of fishes - the lowest ...
... teeth of fishes or not , we are justified in ex- pecting that unequivocal remains of this group of animals will still be found in the Lower Silurian . It is interesting , also , to note that the first appearance of fishes - the lowest ...
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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...