PLATE VI, 

“ AMERICAN ACTINOCRINIDA “ 




















| Coal- 
N | Measures. 
2 
k Kaskaskia. 
[al z 
L.jotLouis. | E 
= Keokuk. È 
D $ 
<c [Burlington 
© 
Kapderbook. 
Z| Upper. 
x ‘ 
Niddle. 
S ! AGE 
2 Lower. | 
a a o | 
` er E ERE ve KaR | 
-| _. (Upper \ 
A 2 
at a Lowe Y. 
i~ 
= | l 
1% 
me N 
|E 
pi> ieee 




