274 LIFE OF THE PLEISTOCENE 



the ancient Appalachian River which included the Tennessee above Chat- 

 tanooga added to the Coosa-Alabama River system. 



In the bank of the Ohio River, near the mouth of Pigeon Creek, below 

 Evansville, 112 deposits occur which contain the fauna indicated below: 



Mollusca 

 Pleitrocera canaUculatum 

 Campelotna ponderosum 

 Fragments of Unios 



Mammalia 

 Megalonyx jejfersoni 



Bison bison (probably an extinct species) 

 Odocoileus virginianus 

 Eqmis complicahis 



Tapirus haysii (first listed as T. lerreslris) 

 Canis indianensis (same as C. dims) 



Near Henderson, Kentucky, a section of the "Peoples Mine" shaft ex- 

 hibited strata evidently referable to the interval under discussion. 113 



1. Yellow clay and sand 10 feet 



2. Black, peaty soil 4 " 



3. Blue clay 3 " 



4. Yellow clay and quicksand, clay and sand, with boulders 1-6 inches in diameter 



and a great variety of subtropical fresh water mussels and univalves 10 " 



5. Porus limestone 1 " 



Height of section 28 feet 



In the river bank near Henderson a deposit occurs 85 feet below the surface 

 which is comparable to the stratum at Evansville. The bones of Megalonyx 

 jejfersoni were associated with Campelotna ponderosum, Pleurocera canaUcula- 

 tum, Physa, Planorbis tricarinata (probably intended for bicarinata = antrosus), 

 Planorbis lens( = exacuous or dilataius) , Cyclostoma{ = Valvata), and fragments of 

 Unios. Cyclas rivularis is mentioned but no such species is known. The bone 

 and shell bed was contained in a stratum of ferruginous sand underlaid by blue 

 or dark ash-colored clay. 114 



Collett 115 reports Megalonyx, Elephas americanus and Castoroides ohioensis 

 from black quicksand or cherty gravel in Vanderburg and adjoining counties. 

 The strata near the river are in alluvial terraces older than Wisconsin time 



112 Leidy, Proc. Phil. Acad. Sci., Vll, pp. 199-200, 1854; also 14th An. Rep. Dept., Geol. 

 Nat. Res. lnd., part 11, 1884. Hay (Geol. Iowa, XX111, p. 108) refers the Pigeon Creek and 

 Henderson deposits to the Sangamon interval. If the river terrace is of lllinoian age, the 

 fauna beneath would belong to the Yarmouth interval. They are so considered here. 



113 Collett, Geol. Surv. lnd., 7th An. Rep., p. 27 1. 



114 Leidy, Smith. Contr. Knowl., Vll, Art. V, pp. 7-8. 

 ™Op.cit. 



