UPPER CRETACEOUS OF TENNESSEE 385 



miles east of Nixon on the Florence Road and a single species from 

 near the top of the ridge at the head of Bear Creek in Wayne County. 

 Both of these localities are given on the sketch map (Fig. i). 

 This member is nowhere in Tennessee very sharply demarked 

 from the overlying Coffee member and probably does not extend 

 northward any farther than the northern part of Hardin County. 

 The Coffee sand member of the Eutaw was first recognized 

 and described by Safford and has been discussed by subsequent 

 writers. It is more than two hundred feet in thickness and is 

 typically exposed on the Tennessee River at Coffee Bluff four miles 

 north of Savannah in Hardin County. It is largely a series of 

 stratified and cross-bedded sands and clays. The sands are usually 

 fine and of various colors, often containing an abundance of scales 

 of mica and in places glauconite and pyrite. The sand frequently 

 is interlaminated with thin layers of clay. Dark or black beds of 

 clay containing very fragmentary leaves and often thick beds of 

 lignitized logs or wood fragments are common. Some of the logs 

 are partly or entirely silicified. Many of the larger logs are per- 

 forated by the Cretaceous wood-burrowing pelecypod Teredo 

 irregularis Gabb/ many of which left thin irregular tubes one inch 

 in diameter in the wood. The clays of the Coffee member are 

 highly carbonaceous and contain an abundance of plant remains. 

 Identifiable leaves from these clays are very rare however. Berry^ 

 has identified sixteen species from Coffee Bluff and ten species from 

 about the same horizon collected at a locality on the Scotts Hill 

 Road five and one-half miles southwest of Decaturville in Decatur 

 County. A small collection of about seven species was made in 

 1 919 from this same member at a locality one mile north of Beacon, 

 Decatur County. Amber is not uncommon in the beds of wood 

 fragments of this member of the Eutaw. A number of small 

 pieces of amber have been collected at Coffee Bluff and at a locality 

 on the Lexington Road two and one-half miles west of Parsons 

 in Decatur County. One of the specimens from Coffee Bluff* 

 contains the wings of a Cretaceous caddis fly, Dolophilus praemissus 



' W. H. Gabb, Jour. Acad. Nat. Sci., Vol. IV, 2d Ser. (Phila., i860), p. 393, PI. 68, 

 Fig. 19. 



^ E. W. Berry, U.S.G.S. Prof. Paper 112 (1919), p. 35. 



