Ciuciiinatian and Lexington Fossils 25 



miles east of Junction City, half a mile from Givens station, near 

 the northwestern edge of Lincoln county, it is less abundant. 

 Several specimens are said to have been found by W. T. Knott 

 about three miles southeast of Lebanon, on a branch of Caney 

 creek, about a mile and a half north of the Lebanon-Bradfordsville 

 road, south of the home of Richard D. Murrell. Since Stropho- 

 mena maysvillensis is quite common in the lower part of this ex- 

 posure, the specimens must have been obtained from the Fair- 

 mount. 



Orthorhynchula linneyi is a characteristic member of the south- 

 ern Fairmount fauna. It does not appear to occur north of a line 

 connecting Clark with Washington and Marion counties, unless 

 possibly as occasional, very rare specimens. Southward, however, 

 ii is very abundant. In southern Kentucky, along the Cumberland 

 river, Orthorhynchula linneyi occurs in the Fairmount bed about 

 two miles east of Rowena. Specimens of Labechia ohioensis occur 

 14 feet above the river. Small specimens of Labechia ohioensis 

 and Tetradinm minus occur 19 feet above the river. Both species 

 are represented by good specimens 35 feet above the river. The 

 iniermediate strata, between 20 and 35 feet above the river, consist 

 of limestone layers, 3 to 4 inches thick, interbedded with equal 

 thicknesses of clayey layers, both richly fossiliferous. In these layers 

 Orthorhynchula linneyi occurs associated with Constellaria florida. 

 Farther up the river, sandy, strongly cross-bedded limestones occur 

 below the horizons containing Labechia and Tetradinm. 



This association of Orthorhynchula linneyi with Labechia and 

 Tetradinm, in southern Kentucky, is characteristic of the upper 

 Fairmount also in the area covered by the Columbia folio, in Ten- 

 nessee. The lower Fairmount here is represented by richly fossili- 

 ferous strata containing Strophomena maysvillensis. 



Orthorhynchtda linneyi has been listed by Bassler also from 

 the vicinity of Ben Hur, in the Powell Valley, in the southwestern 

 corner of Virginia. Here it occurs in strata equivalent to the Fair- 

 mount, associated with Platystrophia ponderosa and Modiolopsis 

 modiolaris. 



Orthorhynchula linneyi is abundant also in the Cynthiana form- 

 ation of Kentucky. Linney mentions it at this horizon in his report 

 on Clark county. It is very abundant in Nicholas county, along the 

 railroad between Pleasant Valley and Millersburg, and it occurs also 

 at the Lower Blue Lick Springs. Specimens are very rare along 



