. The Badland formations of the Black Hills region. Geology; Geology, Stratigraphic; Vertebrates, Fossil. South Dakota School of Mines 43 tions, and are exposed in the upper part of the various tributary creeks.''* For a section of these beds see Figure 8. from U. S. Geol. Porcupine Butte 'Volcanic ash layer 8/astomeryx Parahippus Itferyco cheer us zone Prctomeryx Merycochcerus Merychyus (abundant) Cajc a_reo us_s ha jy mestone layers Promerycochaerus Promery- (very abundant cocTioerns and characteristic) zone Diceratherium EJotherium Steneof/ber r/ypertragulus Parahippus (small sp) Leptauchen
. The Badland formations of the Black Hills region. Geology; Geology, Stratigraphic; Vertebrates, Fossil. South Dakota School of Mines 43 tions, and are exposed in the upper part of the various tributary creeks.''* For a section of these beds see Figure 8. from U. S. Geol. Porcupine Butte 'Volcanic ash layer 8/astomeryx Parahippus Itferyco cheer us zone Prctomeryx Merycochcerus Merychyus (abundant) Cajc a_reo us_s ha jy mestone layers Promerycochaerus Promery- (very abundant cocTioerns and characteristic) zone Diceratherium EJotherium Steneof/ber r/ypertragulus Parahippus (small sp) Leptauchenia (near base). Figure S--Columnar section from Porcupine Butte northward toward White River, as observed by Matthew & Thomson. 1906. Osborn. 1909. Survey Bulletin Xo. 361, p. 70, Cenozoic Mammal Horizons of Western North America, by Osborn and Matthew. THE MIDDLE MIOCEXE The Middle Miocene., so far as I am aware, has not been positively identified within the area covered by the Black Hills map, but strata of this age have been studied fifteen or twenty miles south-southwest of Agate Springs., and they have there yielded a limited fauna. Matthew and Cook designate them as ?Matthew, W. D. A Lower Miocene Fauna from South (Dakota. Am. Mus. Nat. Hist., Bull., Vol. 23, 1907, pp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original O'Harra, Cleophas C. (Cleophas Cisney), 1866-1935. Rapid City, S. D. [The Daily Journal]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgeology, bookyear1910
