POSTGLACIAL BIOTA OF THE GREAT LAKES REGION 129 



Knox County. From recent deposits near the surface (tusk of mammoth) ; on farm (elephant 



tooth). 

 Macon Count}". Location unknown. 

 Ogle County. In bog (mammoth). 

 Ve rmili on County. Near Danville, in bluff, the following succession of strata occur: Soil, 



five feet; gravel, with bones of an elephant, eight feet; clay, two feet; fine sand on coal 



measures, two feet; Near East Lynn, in ditch. 



A number of the records of Miss Anderson cannot be included because of 

 the uncertainty of the horizon from which they came. Bagg 33 adds several 

 records to those of Miss Anderson, as follows : 



Vermilion County, near Rossville, on the bank of north Fork of Vermilion River, near 

 Pesotum, on farm, 3J^ feet below surface. 



Kane County, near Maple Park, 6 feet below surface. 



The remains of several species of mammals have been found in early Wis- 

 consin deposits in Champaign County. These are now in the Museum of the 

 University of Illinois and were identified by Dr. O. P. Hay. They are all 

 apparently referable to post-Wisconsin time. 



Bison bison. Horn cores and part of the skull of a bison were collected at 

 Homer by R. M. Bagg. 



Symbos cavifrons. Horn cores and part of the skull of this musk-ox were 

 found in digging a ditch four miles south of Bondville. 



Mammut americanum. A lower last molar, which had not been cut in the 

 animal's jaw before its death, was found while excavations were being made 

 for the lake at Crystal Lake Park, Urbana. The deposit was about 200 feet 

 north of the former stream channel, in very low ground. 



Megalonyx cf jeffersonii. "A claw was found just east of the road and just 

 north of where the old channel was located at the eastern end of Crystal Lake, 

 Urbana. It was found in blue clay excavated from the lagoon west of the 

 road, during the fall of 1909, by Mr. Lindley of Urbana" (C. C. Adams). 



3. Loess Deposits 



Loess deposits overlying Wisconsin till are reported by Barrows 34 from the 

 Illinois Valley. The presence of mollusks is indicated but no species are 

 named Leverett refers to loess shells as follows: 35 "The portion of the 

 Shelbyville moraine north of Shelbyville carries a larger amount of surface 

 silt than the portion east of that city. Not only the moraine but the district 

 to the east, for a distance of perhaps 20 miles, has a coating of silt so thick 

 that bowlders are completely concealed, for it not infrequently reaches a depth 

 of 5 or 6 feet. . . . The silt is usually of a brownish-yel'ow color, much like 

 that of the oxidized till underneath it, though slightly paler than the till. . . 



» Univ. El. Studies, III, No. 2, pp. 45-56. 

 u Bull. 15, 111. Geol. Surv., p. 48. 

 35 Illinois Glacial Lobe, p. 198. 



X 



