166 LIFE OF THE PLEISTOCENE 



b. Outlet of Lake Agassiz 



^ In Lac qui Parle, NE 34 Sect. 30, a well gave the section indicated below. 

 The shells were not identified. 166 



Soil 2 feet 



Clayey silt, containing numerous bivalve shells.... 8 " 



Yellow till 7 



Sand Yi foot 



Blue till interstratified with sand 14 feet 



Total 31^ feet 



In Renville County, 167 on the east bank of Hawk Creek, a terrace of gravel 

 and sand occurs, fifteen feet above the stream, which contains a calcareous 

 bed about 2 feet thick, 6 or 8 feet above the water. Eight species of mollusks 

 have been identified from this bed. 



Unio, species Goniobasis livescens? 



Anodonta, species Valvata tricarinata 



Sphaerium striatinum Amnicola limosa 



Campeloma, species Planorbis parvus 



The shells are believed to have lived during the time of the outlet of Lake 

 Agassiz. In Nicollet County, 168 at Ashawa, gastropod shells occur 5 feet below 

 the surface in the section noted below. Land shells occurred both above and 

 below the shell bed. 



Surface, sandy 3-4 feet 



Clayey silt 10 " 



In the city of Minneapolis, at the corner of Washington Avenue and 15th. 

 Avenue, Castoroid.es ohioensis was found 169 associated with fragments of Unios. 

 The deposit was at a depth of 8 feet, overlaid by sandy loam and underlaid by 

 brick clay. The location is about twenty feet above the present surface of 

 the Mississippi River. 



c. Vertebrate Animals 



Proboscidian and other vertebrate animals have been found in and near 

 the area of the old Lake Agassiz basin. 170 Elephas (listed as primigenius) is 

 recorded from the following places in Minnesota: 



Fair Haven, Stearns County, in marsh. 



Wabasha, in gravel terrace of Mississippi River. 



Lake City, near Stockton, on shore of Lake Pepin. 



lee Min. Geol. Nat. Hist. Surv., Final Rep., I, p. 630. 



187 Op. cit., II, p. 201. 



IM Op. tit., II, p. 178. 



189 Winchell, 8th. An. Rep. Min. Geol. Nat. Hist. Surv., 1879, pp. 181-183. 



m Winchell, Bull. Min. Acad. Sci., IV, pp. 414-422. 



