8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 148 



limestone, indicating no considerable time interval between the deposi- 

 tion of the two units. In this section, younger faunules of the Cedaria 

 zone such as those found at several localities north of Clinch Mountain 

 seem to be absent, probably owing to the lack of limestone beds or 

 nodules in the shale. The next higher faunules occur in the lower 

 limestone unit, and these belong to the Crepicephalus zone. The upper, 

 unfossiliferous 40-foot shale unit separates the uppermost Crepiceph- 

 alus zone faunule from the lowest Aphelaspis zone faunule. As shown 

 in the later discussion of other sections, the faunules of the lower 

 portion of the Aphelaspis zone are here missing, while the faunules 

 of the upper Aphelaspis zone are well represented. 



Forgey Creek. — A partial section of the Maryville and NoHchucky 

 formations is exposed along Forgey Creek, between Zion Hill and 

 Carter Valley road, in the NE. corner of the Burem quadrangle. The 

 uppermost beds of the Maryville hold the usual Cedaria zone fauna. 

 This was the easternmost locality examined. 



U.S. Route 11-W, dyi miles NE. of Rogersville. — Although the 

 section is poorly exposed here, the locality is important for the pres- 

 ence of unusual, highly fossiliferous red beds at the base of the Noli- 

 chucky shale. The best collecting locality (now deteriorated) was the 

 road cut on the S. side of U.S. Route 11-W at the foot of the hill 

 located at x = 326, y = 434, Burem quadrangle (U.S.N.M. locality 

 27d, author's locality cnd/1). Good collections were also made here 

 in the underlying Maryville limestone, about 30 feet below the top of 

 the formation (cnc/1 ) . 



Yellow and pink layers, absent in other areas, begin to appear here 

 in the upper portion of the Mar)rville. The overlying Nolichucky 

 formation consists, for the lower 50 feet, of alternating red shale and 

 thick, irregular, partly lenticular beds of limestone. Each limestone 

 bed often presents an irregular alternation of aphanitic, brick-red or 

 pink limestone and coarse, yellow to light-brown calcarenite. Both 

 types of limestone are highly fossiliferous in places. The calcarenite is 

 sometimes a coquina of extremely fragmentary trilobite tests, among 

 which only the strong, compact pygidia of Ankoura triangularis have 

 escaped destruction. The red, aphanitic limestone supplies better- 

 preserved fossils, including numerous larval stages of trilobites. A list 

 of the species is given in the discussion of the faunas, 



A search was made to ascertain how far along the strike these 

 peculiar beds extend. The red beds can be traced eastward, north of 

 the highway, to the south flank of the westernmost hill of Miller Ridge, 

 about half a mile E. of locality cnd/1. On the next hill, where the 

 Maryville-Nolichucky contact is well exposed, the red shale and lime- 

 stone have disappeared. West of locality cnd/1, the first exposure 



