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abundant allied Amongst ancient animals appear attain beds belong Birds body bones Britain calcareous Cambrian carbonate Carboniferous Chalk character characteristic clays closely coal composed consists constitute contain Corals Cretaceous deposits developed Devonian entire Eocene Europe examples existing extinct fact feet fishes formation former forms fossils genera genus geological hand important indicate interest Jurassic known land latter Laurentian length less Lignitic lime limestones living Lower Silurian Mammals marine Middle Miocene natural nearly North America numerous occur organic origin period Permian plants plates Pliocene portion possessed Post-Pliocene present principal probably recent referable regarded regions remains represented Reptiles resembling river rocks sand Sandstone shales shell showing similar singular skeleton sometimes species strata structure succession surface teeth Tertiary thickness tion true types Upper Silurian whilst whole yielded
Página ii - A Manual of Palaeontology, for the Use of Students. With a General Introduction on the Principles of Palaeontology.
Página 363 - ... wolves roam over the low grounds. Enormous flights of swans, geese, and ducks arrive in spring, and seek deserts where they may moult and build their nests in safety. Eagles, owls, and gulls pursue their prey along the seacoast; ptarmigan run in troops among the bushes ; little snipes are busy along the brooks and in the morasses ; the social crows seek the...
Página 366 - Description of the Skeleton of an Extinct Gigantic Sloth (Mylodon robustus).' Owen. (24) "Affinities and Probable Habits of Thylacoleo" — 'Quart. Journ. Geol. Soc.,
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.