138 Cretaceous. 



Una naticiformis^ Vivipariis . couesi; from near Evanston, Helix 

 evanstonensis.^ and Goniohasis endUchi. 



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

 Black Buttes, W_yoraing, Sequoia acuminata, Vitis sparsa, Greioiopsis 

 saportana, G. tenuifoUa, Rhus 2^s6udo7neria)ii, Podogonium ameri- 

 canvm., Garpites myricarum^G. glum(pformis.,G. mitratus,C. verrucosus, 

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

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

 lindricum, Pojmlus ungeri, Lauriis ocoteoides, Vihurnum anceps, V. 

 goldianum, V. solitarium, Fraxinus eocenica, Cornus suborhifera, Gar- 

 pifes oviformis, G. triangulosus, G. cosfatus, G. coffoiformis, G. rostella- 

 tus, G. rhomboidalis, and G. minutiilus ; from the divide lietween the 

 sourceof Snake river and Yellowstone lake, Geonomites scMmperi; from 

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

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

 Fraxinus broivnelli, Sapindusstellariaifolius; from Florissant, Garioites 

 pealei ; from Evanston, W^^oming^, Laurus socialis, Garpites laurineus, 

 G. utahensis ; from Bridger's Pass, Wyoming, Laurus utahensis; 

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

 sis plafanoides, Celastrinites lawigatus; from Carbon, W3'oming, Gra- 

 fmgus cequidentata; from Fort Steele, Garpites valvatus, and from 

 other places, Quercus cixiereoides. 



Mazyck k Vogdesf described, fi'om 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. Endlich;]; described the Cretaceous east of the Wind 

 River range in Wyoming, and separated it in ascending order into: 



1. The Dakota Group, consisting of 3'ellow and brown shales, iuter- 

 stratifled 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 heav}^ bed of shale, which is covered by massive white, 

 3'ellow 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 anticlinal axis. In some of the upper sandstones indis- 



*Tert. Flora., Vol. 7, Hayden's Sui\ 



tl'roc. Acad. Nat. Sci, 



tilth Ann. Hep. U. S. Geo. Siir. Terr. 



