University Geological Survey of Kansas. VOLUN IDX, PRA MIVIOO 
Fig. 1. The Cottonwood limestone at Grand Summit. The three thin 
white layers at Prof. Yates’s feet, and the Florena shales above. 
Fic. 2. Horizon of the fossil vertebrates south of Dexter, Kan. In 
the well by the buggy where the lines would meet Wreford lime- 
stone forms escarpment on either side. 
