[[circled in margin]] 12 [[/circled in margin]] 
May 22 
340a 6639 - Bellula zone Qy 1 00 yds E of bridge over Cedar R on 
Urbana - Shellsburg road. 
344b=6640 Independencis zone 
344b(1)=6640a Lower Rensselandia 
344b(2)=6640b Up. Profundum zone 
Qy on W side of small creek center W side SE 1/4 21-88N-8W, about 2 
miles NW of Quasqueton, Buchanan Co., Iowa 
10-20 of Independencis zone in lower part and about 20' of Profundum 
zone. Latter well exposed. Rensselandia appears with Cystiphyllum just 
above the Independencis zone. 
335f=6641 Road cut NW 1/4 28-88N-8W, Liberty Tp., 0.15 mile west of 
bridge over Pine Creek. 
f(1)= 6641 - Independensis 
f(2)= 6641a - Profundum 
About 5' of upper independencis zone and about 10' of profundum zone. 
Rensselandia low, just above indep. zone. Hypothyridina about 4' 
[[insertion]] below [[/insertion]] Profunda zone 
G. Arthur Cooper - Field notes, 1966 
Transcribed and Reviewed by Digital Volunteers 
Extracted Nov-02-2015 11:09:05 
Smithsonian Institution Transcription Center, Smithsonian Institution Archives 
