376 



T. E. SAVAGE ALEXANDRIAN SERIES IN MISSOURI AND ILLINOIS 



System 



Series 



Forma- 

 tions 



Location of 

 exposures 



Description of horizons 







o 



^•~ 



3a. Yellowish brown magnesian 







3 CD 



— :, 



= X 



limestone above, bluish shah- 







E- 



23 1 



limestone below, in layers 3 to 

 9 inches thick. Atrypa putilla, 







— z 



Oamarotaechia f cliftonensis, Ehyn- 







c: 



•*_'" 



chotreta simplex, R. flu 







7- 



X 



J~^ 



Sdiuchertella cf. subplana, and 







^ 



~ 



other fossils 10>< 









A break in deposition. 







s : 5 "• « 5 



2b. Bluish to brown impure limestone 









s*gs -^ 



in layers 3 to 3b' inches thick, 









-. - ~ - — - ^ = 



with few fossils Bowling Green 









aVlS ll = i 



member 15 to 35 







*J 



>.-= 5 - i 5 ■- S i 









V 



^ 



- - x ^ - - - = 1 









O 



g - g Z -r = ? - ■- 









■Q 



" = ^t£^£-Z = ". 













^•:?.e^tE£z 







z 



2\| 



DM w — 







-_ •_ 





K 



< 



© 



c c s g 



2a. Gray to brown limestone, the 



< 



2g 



- 



o 



z - "5 z: 



upper layer in places containing 



5 



z 



X 



■ z " =t 



Galapaecia facositoidea, Favositea 



< 



QD 



g 



- — ri . 



= — DO 



gubdongus, Wh itfiddella 



X 



H 



~ 



5 ' :? 



and Cyclonema daytonensis. Be- 





< 



r 



s sIh-1 



low this Atrypa prxmarginalis, 







c 





A. put ilia, Camarotcechiaf c - 







IB 



= r ll"? 



eiiih'i. D'tlmanella edyei 







jt. 



- :: irj 



and Wliitfiddetta bUlingsani are 







w 





common! The lower layers 

 with Dalmanites danai and 

 Schuchertella propinqua common 

 Cyrene member) 8 to 15 









~ o z * - = 



The upper one-half to two-thirds 









g-S c iCi^ 



of this member is oolitic 1 Noix 









x — - ~ ~ — - 



oolite • near the Mississippi 









^t"'^i~ 



River. 









A break in sedimentation. 





a? 



=TJ° i^ 



1. Fine-grained, dark limestone, in 











— — 



Sl« I 2 -- 



layers 1 to 5 inches thick, with 









~ =~ ■ — i~ = 



Ptychocrinus splendens, Ror 







- — 



- X 



CO 



§21 pi 



quina t mesicosta, SchuchcrteUa 



misi ' mkoea- 







u 



rinaia, and Cormdiies incurvus, 33 to 38 







— OQ 



B E ' — ~ , i 









— 



Isllp't 









5 



< 









A break in sedimentation. 



a 



= 









2 



«s 



- z 







c 





o - 







> 



g 



= - 







o 



'S 



- c; 







- 



= 







O 



5 



- 







