32 On the Triassic Rocks of Kansas and Nebraska. 
No. 1, as we now understand it, and the beds containing the | 
Permian fossils : 
the Missouri, in Nebraska. ssociated with these leaves We 
likewise found specimens of the same peculiar trilobate le 
* Trias of Kansas, by F. Hawn, Trans. St. Louis Acad. Sci., vol. ip im. 
