Collected papers, Volumen8 |
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Página 7
... continuous close geographical connections existed from the Jurassic throughout the Cretaceous , but in the next Nearctic and Palearctic parallels which we can draw , namely in the Basal Eocene between the Torrejon of New Mexico and the ...
... continuous close geographical connections existed from the Jurassic throughout the Cretaceous , but in the next Nearctic and Palearctic parallels which we can draw , namely in the Basal Eocene between the Torrejon of New Mexico and the ...
Página 30
... continuous volcanic disturbances . the period included a prolonged land depression in southern Europe and extensive invasions of the sea as shown in the fol- lowing table : 4. SICILIEN . ( ARNUSIEN ) 3. ASTIEN . A marine phase in Sicily ...
... continuous volcanic disturbances . the period included a prolonged land depression in southern Europe and extensive invasions of the sea as shown in the fol- lowing table : 4. SICILIEN . ( ARNUSIEN ) 3. ASTIEN . A marine phase in Sicily ...
Página 50
... continuous and prolonged that great orders of mammals have been evolved ( Fig . III ) in each . Thus Arctogæa , containing the broadest and most highly diversi- fied land area , appears hypothetically as the center in which fourteen ...
... continuous and prolonged that great orders of mammals have been evolved ( Fig . III ) in each . Thus Arctogæa , containing the broadest and most highly diversi- fied land area , appears hypothetically as the center in which fourteen ...
Página 94
... continuously traced from the base to the summit of the Oligocene . Primitive species of Brontotherium also appear at the base , although the phyletic sequence through the Middle to the Upper Beds is not so clear . Symborodon sud- denly ...
... continuously traced from the base to the summit of the Oligocene . Primitive species of Brontotherium also appear at the base , although the phyletic sequence through the Middle to the Upper Beds is not so clear . Symborodon sud- denly ...
Página 8
... continuous change . This , however , by no means precludes saltation from being a vera causa in past time , as rising from " unknown " causes in the germ - cells and as forming the materials from which nature may select the saltations ...
... continuous change . This , however , by no means precludes saltation from being a vera causa in past time , as rising from " unknown " causes in the germ - cells and as forming the materials from which nature may select the saltations ...
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Términos y frases comunes
Acheulean adaptive African allometrons Amer American Museum animals Artiodactyla basin beds bio-mechanical Bridger Bull CARNIVORA Chellean clay coast collections Cope correlation Coryphodon Creek Depéret deposits Diceratherium Douglass educational Elephas Embolotherium Entelodon Eobasileus Eocene Europe evolution Expedition fauna formation Fossil genera Geol geologic geologist glaciation glaciers HENRY FAIRFIELD OSBORN Hist HOMOTAXIS horizons Huxley indesc industry Interglacial John Day Leidy Leverett loess lower Miocene Mammalia mammals marine Marsh Matthew Mayet Megacerops Merychyus Mesohippus meters Middle Miocene moraines Mousterian Museum of Natural Natural History Naturalist Nebraska Neohipparion North America northern observed Oligocene Oreodon origin paleontology Penck and Brückner period Perissodactyla phase Plains Pleistocene Pliocene present Procamelus Protohippus Quaternary recent rectigradations region Rhinoceros Rodentia Science scientific Scott Section shorelines South species stage Survey terrace Tertiary tion titanotheres Titanotherium Uinta Upper Eocene valley vertebrate Wasatch White River Wind River Wortman York zone zoology
Pasajes populares
Página 74 - Under a wide and starry sky Dig the grave and let me lie. Glad did I live and gladly die And I lay me down with a will. This be the verse you grave for me: " Here he lies, where he longed to he: Home is the sailor, home from the sea, And the hunter home from the hill.
Página 6 - too often quote the rugged insistence of Carlyle: " Produce ! Produce! Were it but the pitifullest infinitesimal fraction of a product, produce it in God's name! 'Tis the utmost thou hast in thee: out with it, then.
Página 3 - IMMEDIATELY on the receipt of a cable announcing the first successful descent of the Barton bathysphere I cabled to Director Beebe for a brief official report to be published in SCIENCE. This is the thirteenth expedition of the Department of Tropical Research of the New York Zoological Society under the direction of William Beebe. It is the fifth year of
Página 1 - average cost of each trip being $9,920. THE GALAPAGOS ISLANDS The seventh expedition of the Department of Tropical Research of the New York Zoological Society •was directed to the Galapagos Archipelago, and is known as the Williams Galapagos Expedition. Through the generosity of Mr. Harrison Williams the two hundred and fifty foot steam yacht Noma was chartered for the purpose and left March first on
Página 15 - We cannot see how the differentiation into species came about. Variations of many kinds, .often considerable, we daily witness, but no origin of species. . . . That particular and essential bit of the theory of evolution which is concerned with the origin and nature of species remains utterly mysterious.
Página 74 - Home is the sailor, home from the sea, And the hunter home from the hill.