THE JULES SOIL AND ASSOCIATED MOLLUSCAN FAUNAS 



^^^^^^ LOCALITIES 

 MOLLUSCAN SPECIES ^^^-^^^ 



Cottonwood School South 



Bunkum South 



Bald 

 Bluff 



x) 



PQ 



T3 



T3 CN 

 <U 1 

 PQ H 



u 



(U 



ex 



01 



Anguispira alternata (Say) 



• 













Columella alticola (Ingersoll) 





• 



• 







• 



Deroceras laeve (Miiller) 







• 









Discus cronkhitei (Newcomb) 















Discus macclintocki (F. C. Baker) 





• 







• 





Euconulus fulvus (Miiller) 



• 



• 



• 





• 



• 



Gastrocopta armifera (Say) 



• 



• 











Hendersonia occulta (Say) 



• 





• 



• 



• 





Lymnaea (Fossaria) dalli (F. C. Baker) 



• 





• 







• 



Lymnaea (Fossaria) parva Lea 







• 







• 



Mesodon thyroidus (Say) 









• 



• 





Pupilla muscorum (Linne) 







• 







• 



Pupoides albilabris (Say) 



• 













P.etinella (Nesovitrea) electrina (Gould) 













• 



Stenotrema leaii (Binney) 







• 









Succinea gelida F. C. Baker 



• 





• 







• 



Succinea pleistocenica F. C. Baker 



• 





• 





• 





Succinea (Catinella) sp. 









• 



• 





Triodopsis multilineata (Say) 















Vallonia gracilicosta Reinhardt 



• 





• 





• 



• 



Vertigo alpestris oughtoni Pilsbry 



• 





• 





• 



• 



Vertigo hannai Pilsbry 



• 





• 







• 



Total number of species 



12 



12 



14 



4 



9 



11 



Fig. 3 - Composition of molluscan faunas of the upper part of the Peoria Loess 

 in central and western Illinois. The stratigraphic position and relation 

 to radiocarbon dates of the three faunas from the Cottonwood School 

 South Section (NWiNWi SWi sec . 12, T. 18 N., R. 11 W. , Cass 

 County) are given in the described stratigraphic section. The relation 

 of the two faunas from the Bunkum South Section (SEiNWiNEi sec. 24, 

 T. 2 N., R. 9W., St. Clair County) to the Jules Soil is shown in figure 

 2. The position of the fauna at the Bald Bluff Section (NEiNEiSEi sec. 

 20, T. 12 N., R. 4 W., Henderson County), the associated clay 

 minerals, and the position of the radiocarbon date have been described 

 by Frye, Glass, and Willman (1968). 



