ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 487 



^"^>^^ LOCALITIES AND LEVELS 

 ^"^^^ OF SAMPLES 



MOLLUSCAN SPECIES ^"""^^^ 



STRAWN NE, No. 135-1 

 (intervals in feet) 



CM 



1 



O 



i 



CM 



vD 

 1 



00 



1 



o 



1 



00 



CM 



1 



O 



i-H 



1 



CN 



Amnioola gelida F. C. Baker 















• 



Amnioola leightoni F. C. Baker 















• 



Gyraulus altissimus (F. C. Baker) 















• 



Eelisoma antrosa (Conrad) 















• 



Physa gyrina hila^rethiana Lea 















• 



Valvata trioarinata (Say) 















• 



Promenetus wnbilicatellus (Cockerell) 















• 



Pisidiwn nitidum Jenyns 















• 



Promenetus exaouous (Say) 





• 













Pisidiwn compression Prime 















• 



Sphaerium simile (Say) 















• 



Ferrissia parallela (Haldeman) 

















Lymnaea (Fossaria) parva Lea 







• 











Lymnaea (Fossaria) obrussa Say 

















Eelisoma oampanulatum (Say) 

















Valvata lewisi Currier 









• 



• 





• 



Sphaerium seouris (Prime) 





• 













Lymnaea (Stagnioola) lanoeata Gould 











• 







Eelisoma trivolvis (Say) 





• 













Lymnaea (Fossaria) dalli F. C. Baker 





• 













Armiger exigua Leonard 















• 



Planorbula armiger a (Say) 











• 







Suceinea (Oxyloma) retusa Lea 





• 







• 







Aplexa hypnorum (Linne) 











• 







Caryohium exile Lea 















• 



Eelioodisous parallelus (Say) 











• 







Lymnaea (Stagnioola) oaperata Say 



• 















Lymnaea (Stagnioola) palustris (Muller) 

















Pseudosuooinea columella (Say) 













• 





Sphaerium fabale (Prime) 

















Vertigo modesta (Say) 

















Total number of species 



19 



12 



10 



11 



17 



13 



13 



Fig. 3 - Chart showing occurrence 

 at three localities, 135-1 



and d 

 , 135- 



istribution of 

 2, Strawn NE, 



31 species 

 Livingston 



