684 A. F. FOERSTE 



rhomboidalis, Stropheodonta beckei, Strophonella piinctidifera, Uncmu- 

 liis 7iucleolatiis, Atrypa retiadaris, Delthyris perlamellosus, Delthyris 

 related to D. perlamellosus, but with a large, high, flat, triangular 

 area on the ventral valve, Spirifer cyclopterus, Spirifer with 3 or 4 

 plications on either side of the mesial fold, ornamented with fine 

 radiating striae, evidentl}'' closely related to or identical with 

 Spirifer tenuistriatus, Meristella 7neeki, Platyceras te^miliratiim, and 

 Dalnianites pleuropiyx. 



No specimens of Camarocrinus were found above the 50-foot 

 level, but the Linden fauna continues into the overlying rocks. 

 It is abundantly represented in two cherty layers which imme- 

 diately overlie the Camarocrinus beds, and in a layer of chert, about 

 I foot thick, which occurs about 19 feet above the Camarocri?itcs 

 beds. A large part of the section above the Camarocrinus horizon 

 is soft and weathers readily, usually forming poor exposures, but 

 the top of the Linden section at this locality is formed by more 

 massive limestone, 17 feet thick, containing few fossils. Among 

 these is Dalmanites pleuroptyx. The Black shale series is absent. 

 The basal layer of the Waverly is 20 inches thick, and consists of 

 sandy shaly rock belonging to the Hardin sandstone, and con- 

 taining large specimens of Spirophyton. 



The Linden bed dips westward; that part of the bed exposed 

 in the eastern bluff apparently dips beneath the rock forming the 

 western bluff, west of Anderson and Johnson branches. A study 

 of the western bluff, however, suggests that the section here 

 exposed is merely a repetition of the eastern section, just 

 described. The massive limestone at the top of the Linden bed,, 

 however, has a thickness of only 6 to 10 feet, being unconform- 

 ably overlaid by the Black shale series. It contains Rhipido- 

 mella oblata, Spirifer cyclopterus, Uncinidus nucleolatus, Meristella 

 princeps, Platyceras tetiuiliratiim, Dalmaintes pleuroptyx, and Phacops 

 logani. 



West of the store at White Sulphur Spring, i ^ miles south- 

 west of Pickwick Landing, numerous Linden bed fossils occur in 

 the residual chert along the middle and lower parts of the hill- 

 side. Exposures occur also in the vicinity of Decaturville, at 

 Hollady,_^5 miles south of Big Sandy station on the Lower Cam- 



