OF NORTH AMERICA. 



265 



probably is, due to lack of records, or to lack of care in identifying 

 material. 



RECORDS. 



LCESS. 



ILLINOIS: Galena, Jo Daviess Co. (Chamberlin and Salisbury; McGee); 

 Freeport, Stephenson Co. (Hershey; Leverett) ; Virginia, Cass Co. (Leverett; 

 Snyder) ; Fulton, Whiteside Co. (McGee) ; Rock Island, Rock Island Co. 

 (Udden). 



IOWA : Washington Township, along Clear and Walnut Creeks, Story Co. 

 (Beyer) ; Bluffs of Missouri, Fremont and Mills Counties (Call) ; Des Moines, 

 Polk Co. (Call and McGee) ; Jefferson, Clayton Co., southeast quarter, Section 

 20 (Chamberlin & Salisbury) ; Loess of Iowa (Keyes) ; Muscatine, Muscatine 

 Co. (Leverett; McGee; Shimek; Witter); Iowa City, Johnson Co. (McGee; 

 Pilsbry; Shimek); Fremont Co., terraces (?) base of Missouri bluffs, Scott 

 Township; near Njshnabatna River; Scott and Johnson Counties; Pottawatta- 

 mie Co., three miles west of Avoca; west of Minden (Shimek) ; Loess of Iowa 

 (Todd). 



Geological. 

 Distribution 

 MODICELLA. 



Loess 

 Marl beds 

 Florenoia * 

 Miscellaneous 



FIG. 26. 



NEBRASKA: Lancaster Co. (Shimek). 



WISCONSIN: Prairie du Chien, Crawford Co. (Chamberlin; Leverett); 

 Bridgeport, Crawford Co., mouth of Wisconsin River, higher terraces (Cham- 

 berlin and Salisbury). 



MARL DEPOSITS. 



INDIANA: Stewardsville, Posey Co.; west of Mounts, Gibson Co. (Fuller 

 and Clapp). 



MICHIGAN : One-quarter mile east of Cedar Lake Station, Montcalm Co. 

 (Walker). 



NEW JERSEY: White Pond, Sussex Co. (Baker; Leidy; Weller). 

 SOUTH DAKOTA: Bradley, Clark Co. (Todd). 



