48 Vaughan — Outlying Areas of the Comanche Series. 



" Gryphcea forniculata White. 

 Exogyra texana Roemer. 

 Ostrea subovata Shum. 

 Ostrea quadriplicata Shum. (variety). 

 Cucullcea terminalis Conrad. 

 Plicatida incongrua Cragin. 

 Trigonia emoryi Conrad. 

 Trigonia sp. 



Turritella seriatim-granulata Roem. 

 Schcenbachia peruvianas von Buch." 



As Professor Cope gives no precise locality for the Creta- 

 ceous outcrops, the information furnished by Mr. J. L. Daggitt, 

 a cowboy familiar with the country, may be of interest. He 

 told me that the same kind of a shell bed, that I saw west of 

 Camp Supply, occurred on high places on the divide between 

 Beaver Creek and the Cimarron River on both sides of the 

 Camp Supply and Dodge City, Kansas, cattle trail. The first 

 outcrop is to be seen about five miles north of the former 

 place. 



Outcrops in the vicinity of Taloga. 



Mr. J. F. Gallup guided me to the localities examined. On 

 the northwest J, Sec. 9, T. 19 K, R. 17 W. (I. M.) seven miles 

 north and three miles west of Taloga, there are outcrops of a 

 shell agglomerate, 12 to 18 inches thick, and composed almost 

 entirely of the shells of Gryphcea forniculata White. Besides 

 these species there are 



Gryphcea tucumcarii Marcou, in the same matrix 



with the G. forniculata. 

 Cyprimeria cf. texana (Roemer). 

 Protocardia texana Conrad ? 



Three or four other species of undetermined pelecypods. 

 Turritella seriatim-granulata Roemer. 

 Schloenbachia peruviana von Buch. 

 Echinoid plates. 



This shell limestone, at the place where it was examined, 

 constituted all there was of the Cretaceous. The outcrops 

 occur along the sides of the draw and were deposited against 

 the sides of the Red Beds hills. They occupy an elevation 

 about 100 feet below the top of the divide, which is composed 

 of Red Beds, overlain by an occasional remnantal patch of 

 Plains gravel. According to the barometer readings the Cre- 

 taceous outcrops seemed to be about 100 feet above the South 

 Fork of the Canadian, but they may stand higher. A little 

 higher up the draw along which the above described limestone 

 outcrops occur, is an exposure of stiff chocolate-colored sandy 



