THE KANSAN ICE INVASION 259 



Cervalces roosveiti 



Crawford County, Denison. Greater part of right antler and part of skull 

 (page 267). 

 Rangifer cf. muscatinensis 



Woodbury County, Correctionville. Post-Kansan deposits. Antlers, 

 (pages, 281-282). 

 Bison occidentalis. 



Crawford County, Denison. Scapula (page 325). 



Woodbury County, Correctionville. In Welch gravel pit, horn core and 



base of skull. (post-Kansan, page 325) 

 Harrison County. In clay at depth of 22 feet on the 'bench' or second bot- 

 tom of the Boyer River (page 306). 

 Hamilton County. Near Webster City, sticking in gravel bar in Boone 

 River; horn-core and part of skull, (page 323). 

 Symbos cavifrons 



Warren County, one and one-half miles east of Indianola, in Lincoln Town- 

 ship. Atlas at depth of 1 1 feet (page 307). 

 Musk Ox 



Warren County, Indianola. In well at depth of 38 feet beneath river bot- 

 tom, in old soil. Part of humerus (page 308). 



2. NEBRASKA 



The Yarmouth interval is believed to be represented in eastern Nebraska, 

 especially in the loess deposits of the Missouri bluffs. References to deposits 

 of this are, however, rare. Todd 47 records fresh water shells from a deposit of 

 black earth in Limekiln ravine, which is apparently referable to the Yarmouth 

 stage. The stratum is 90 feet above high water of the Missouri River, and 15 

 feet above the Greenhorn limestone from which it is separated by stratified 

 drift. Over this fossil stratum the loess lies " scores of feet thick, " with a very 

 steep slope. The till beneath the loess is evidently Kansan. Three species 

 of mollusks are enumerated. 



Spkaerium sulcatum (= simile) 

 Planorbis bicarinatus {=antrosus) 

 Planorbis, large species 



The Loess 

 Russel 48 lists a loess fauna from Loup River, which overlies Kansan drift 

 and is probably of post-Kansan age. Ten species are enumerated. 49 



Succinea axara Pupilla blandi 



lineata (=grosienori) Vallonia pulchella (= gracilicosta) 



47 Elk Point Folio, U. S. G. S., No. 156, p. 4. 

 " Amer. Geo!., VII, pp. 38-44. 

 ■ Op. cit., p. 40. 



