Collected papers, Volumen8 |
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Página 1
... Similar Stages of Evolution ....... 3. Simultaneous introduction of new forms ..... 4. Predominance of certain types .......... 5. Convergence and divergence of Palearctic and Nearctic forms .... 3 3 4 5 6 6 6 7 7 7 II . CLASSIFICATION ...
... Similar Stages of Evolution ....... 3. Simultaneous introduction of new forms ..... 4. Predominance of certain types .......... 5. Convergence and divergence of Palearctic and Nearctic forms .... 3 3 4 5 6 6 6 7 7 7 II . CLASSIFICATION ...
Página 6
... SIMILAR STAGES OF EVOLUTION : the similarity in the stage of development of allied phyla , as expressed in the pat- tern of the molar teeth , in the transformation of the premolar teeth , complication of the molar teeth , in the ...
... SIMILAR STAGES OF EVOLUTION : the similarity in the stage of development of allied phyla , as expressed in the pat- tern of the molar teeth , in the transformation of the premolar teeth , complication of the molar teeth , in the ...
Página 9
... similar permanent limits placed between them . The second is to establish , as con- venient divisions of each , Upper , Middle , Lower , or Lower and Basal . It is not too much to hope that the synchronism of these periods in the entire ...
... similar permanent limits placed between them . The second is to establish , as con- venient divisions of each , Upper , Middle , Lower , or Lower and Basal . It is not too much to hope that the synchronism of these periods in the entire ...
Página 10
... similar age . b . Among the RODENTS OF PRIMATES ( for the systematic position of these animals is not definitely known , see SCHLOSSER and MATTHEW ) compare Protoadapis ( Cernaysien ) , dentition 2-1-3-3 , and Plesiadapis with its ...
... similar age . b . Among the RODENTS OF PRIMATES ( for the systematic position of these animals is not definitely known , see SCHLOSSER and MATTHEW ) compare Protoadapis ( Cernaysien ) , dentition 2-1-3-3 , and Plesiadapis with its ...
Página 11
... similar primate teeth in Pro- fessor DEPÉRET's collection from Lissieu ; this is also a fissure fauna and of similar age to Egerkingen . THIRD because of the absence in Egerkingen of many typ- ical lower Eocene or Suessonien types and ...
... similar primate teeth in Pro- fessor DEPÉRET's collection from Lissieu ; this is also a fissure fauna and of similar age to Egerkingen . THIRD because of the absence in Egerkingen of many typ- ical lower Eocene or Suessonien types and ...
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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.