BulletinSouth Dakota School of Mines and Technology., 1920 |
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abundant Acad American Museum animals Badlands Big Badlands Black Hills bones Bull Caenopus camel Canidae Carnegie Mus carnivores clays Cope creek Daemonelix Daphoenus DARTON deposits Diceratherium Dinictis Dinohyus earliest Elotherium Entelodon Eocene Equidae Extinct feet Figure formations fossil Geological Gidley Hatcher Hayden hind foot Hist Hoplophoneus horse Hyaenodon Jour Leidy Leptauchenia limbs Lower Miocene Mammalia Mammals Marsh Matthew Mauv Megacerops Merycoidodon Mesohippus Metamynodon Mines Bulletin Miocene Moropus Museum of Natural Natural History nebrascensis Neohipparion North America northwestern Nebraska Oligocene Oreodon Oreodon Beds Osborn and Wortman Oxydactylus Parahippus perissodactyls Peterson Phila Photograph by O'Harra Plate Pliocene Poebrotherium present day Proc Promerycochoerus Protoceras Protoceras Beds region rhinoceroses sandstones School of Mines Scott Sheep Mountain skeleton skull South Dakota South Dakota School species specimens Steneofiber Stenomylus Surv tapirs teeth Terres Tertiary Titanothere Titanotherium beds toes turtles U. S. Geol Upper White River badlands
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Side 5 - ... fauna retains but a few dwarfed representatives. Noble rivers flowed through plains and valleys, and sea-like lakes, broader and more numerous than those the continent now bears, diversified the scenery. Through unnumbered ages the seasons ran their ceaseless course, the sun rose and set, moons waxed and waned over this fair land ; but no human eye was there to mark its beauty, nor human intellect to control and use its exuberant fertility.
Side 160 - Explanations of a second edition of a geological map of Nebraska and Kansas...
Side 160 - Notes explanatory of a map and section, illustrating the geological structure of the country bordering on the Missouri river, from the mouth of the Platte to Fort Benton in latitude 47° 30' N., longitude 110° 30
Side 5 - ... delectation of the wandering bee. Fruits ripened in the sun, but there was no hand there to pluck nor any speaking tongue to taste. Birds sang in the trees, but for no ears but their own. The surface of lake or river...
Side 43 - ... sandstones and mud-conglomerates, all very irregular and of limited extent. The hard calcareous layers are more constant. A bed of volcanic ash lies near the top of the formation, and there may be a considerable percentage of volcanic material in some of the layers further down. These volcanic ash beds should in theory be of...
Side 5 - The pictures which geology holds up to our view of North America during the Tertiary ages are in all respects but one more attractive and interesting than could be drawn from its present aspects. Then a warm and genial climate prevailed from the Gulf to the Arctic Sea. The Canadian highlands were higher, but the Rocky Mountains lower and less broad. Most of the continent exhibited an undulating surface, rounded hills and broad valleys, covered with forests grander than any of the present day, or...
Side 45 - ... Black Hills map, except in the southern part, chiefly in Nebraska, Strata of this age have been studied fifteen or twenty miles southsouthwest of Agate Springs, and they have there yielded a limited fauna. Matthew and Cook designate them as the Sheep Creek beds, and describe them briefly, as follows: "They consist of soft fine-grained sandy 'clays' of a light buff color, free from pebbles, and containing harder calcareous layers. Their thickness is estimated at 100 feet. Near the top is a layer...
Side 165 - Mem., vol. 1, pt. 7, pp. 355-147, 3 pis., 34 figs., 1901. Describes character and occurrence of Tertiary beds in Colorado and the vertebrate fauna obtained from them. 3. A skull of Dinocyon from the Miocene of Texas. Am. Mus. Nat. Hist., Bull., vol. 16, pp.
Side 167 - OSBORN, HF Ten Years' Progress in the Mammalian Paleontology of North America. Am. Geol., vol. 36, 1905, pp. 199-229. Reprinted from the Comte-Rendu of the International Congress of Zoology, held at Berne, Switzerland, 1904. PETERSON, OA Osteology of Oxydactylus. Carnegie Mus. Ann., vol. 2, 1904, pp. 434-476, pis.
Side 57 - The more typical forais are upright tapering spirals and they twist to the right or to the left indiscriminately. The spiral sometimes encloses a cylindrical body known as the axis but it is more often without the axis. Sometimes the spiral ends abruptly below but more often there projects from the lower part one or two obliquely ascending bodies placed much as the rhizomes of certain plants. The size of the well developed form varies considerably. The height of the corkscrew portion often exceeds...