194 Cincinnati Society of Natural History. 



tina naticiforinis, Viviparus couesi; from near Evanston, Helix 

 evanstonensis^ and Goniohasis endlichi. 



Prof. Leo Lesquereux* described, from the Fort Union Group, at 

 Black Buttes, Wyoming, Sequoia acuminata, Vitis sparsa, Greiciopsis 

 saportana, G. tenuifolia, Rhus pseudomeriani, Pddoyonium ameri- 

 canum, Carpites myricarum^C. glumo'formis.C. mitratus,C. verrucosus, 

 C. viburni, G. hursoiformis; from Golden South Mountain, Colorado, 

 Sahalites fructifer, Palmocarpon truncatum, P. corrugatum, P. suhcy- 

 lindricum, Populus ungeri, Laurus ocoteoides. Viburnum anceps, F, 

 goldianum, V. solitarium, Fraxinus eocenica, Cornus suhorhifera, Car- 

 pites ov if ormis, C. t7Hangulosus, C. costatus, C. coffceformis, C. rostella- 

 tus, C. rhomboidalis, and C. minutulus ; from the divide between the 

 sourceof Snake river and Yellowstone lake, Geonomites schimperi; from 

 Raton. Mountains, near Fischer's Peak, New Mexico, Geonomites tenui- 

 racJiis, G. ungeri ; from CastelJo's Ranch, near South Park, Colorado, 

 Fraxinus brownelli, Sapindus stellar imfolius; from Florissant, Carpites 

 pealei; from Evanston, W3^oming, Laurus socialis, Carpites laurineus, 

 C. utahensis ; from Bridger's Pass, \yyoming, Laurus utahensis; 

 from above Spring Canon, near Fort Ellis, Montana, Dombeyop- 

 sis platanoides, Celastrinites Iwvigatus; from Carbon, Wyoming, Cra- 

 taegus cequidentata; from Fort Steele, Carpites valvatus, and from 

 other places, Quercus cinereoides. 



Maz3'ck ^' Vogdesf described, from the Cretaceous beds reached in 

 artesian boring, at Charleston, South Carolina, at the depth of 1,880 

 feet below the surface, Anomia andersoni. 



In 1879, F. M. EndlichJ described the Cretaceous east of the Wind 

 River range in W^'oming, and separated it in ascending order into: 



1. The Dakota Group, consisting of 3^ellow and brown shales, inter- 

 stratified with sand stones of the same color. In the shales, above 

 some of the thin beds of sandstone, there are slight indications of 

 coal. The seams are but half an inch thick, and the coal is of that 

 variety- called jet coal. Higher up the sandstones predominate, 

 separated by thin laj^ers of homogeneous, dark shales. Near 'the top 

 there is a heavy bed of shale, which is covered by massive white, 

 yellow and brown sandstones. A small thickness of arenaceous shales 

 closes the group. This is the general section of the Dakota, as exposed 

 west of the anticliaal axis. In some of the upper sandstones indis- 



*Tert. Flora., Vol. 7, ITayden's Sur. 



fProc. Acad. Nat. Sci. 



Jllth x\iin. Kop. U, S. Geo. Sur. Terr. 



