Vaughan — Outlying Areas of the Comanche Series. 45 



are overlain by yellow clays, or dark-colored thinly laminated 

 clay shales. In some instances the sands may be indurated so 

 as to form a hard rock. 



Belvidere, 



Map showing position of outcrops of the Comanche Series : outcrops marked 



by x. 



In a sandstone layer in the clays, casts of the following fos- 

 sils were found* : 



Tapes belv icier ensis Cragin ? 



Undetermined species of Cardium, JVucula, and Corbula. 

 The Cardium may be the one identified with C. hansasense Meek 

 by Cragin. 



* Mr. T. W. Stanton has furnished me notes on the fossils collected. 



