76 Upper Cretaceous Fauna from Tennessee [274 



from a few places in this general region of the Mississippi 

 radius of 7% miles of the Dave Weeks' place. At a point % 

 mile west of Adamsville Stephenson 5 made a collection from 

 the Exogyra ponderosa zone of the Selma chalk. Four miles 

 northeast of Adamsville he made another collection from the 

 same zone at a locality referred to as " four miles southwest 

 of Coffee Landing." Three miles west of Adamsville fossils 

 were found by Stephenson in the Exogyra costata zone of the 

 Selma chalk. About eleven miles southwest of the Coon 

 Creek locality and "two and one-half miles east of Purdy," 

 Safford 6 collected in the uppermost part of the formation 

 which he designated as the " Green Sand." The horizon 

 from which this last collection was made probably has the 

 same stratigraphic position as the Coon Creek beds. The 

 best-known fossil locality in this general region is the classic 

 Owl Creek locality 7 in Tippah County, Mississippi, often re- 

 ferred to in the literature as Ripley, Mississippi. (See sketch 

 map, Fig. 1.) 



A sketch map has been inserted on page 77 to show the 

 location of Coon Creek and Owl Creek and to give in a 

 general way the areal geology in the region about these 

 localities. Big Cut and Coffee Landing, two other impor- 

 tant localities in the Cretaceous Geology of Tennessee are 

 shown on this map. The information given on the map south 

 of the Tennessee-Mississippi line has been furnished by Dr. 

 L. W. Stephenson of the United States Geological Survey. 



The Coon Creek horizon is stratigraphically near the base 

 of the Eipley formation and in the Exogyra costata zone. 



Idem., p. 24. 



6 Safford, J. M., Geology of Tennessee, 1869, p. 416. 



7 Conrad, T. A., Jowr. Acad. Nat. 8ci., Philadelphia, 1858, vol. iii, 

 2d ser., pp. 323-336. 



Conrad, T. A., Jour. Acad. Nat. Sci., Philadelphia, 1860, vol. iv, 

 2d ser., pp. 275-298. 



Stephenson, L. W., U. S. Geological Survey, 1914, Prof. Paper 81, 

 p. 24, table 2. 



