18 



ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 480 



Midcontinent 



Appalachia 



Eur ope 



U. S. S. R. 



< 

 > 



CO 



W 



0_ 



0_ 

 0_ 



CO 

 CO 



CO 

 CO 



VIRGILIAN 



Monongahela 

 Fm. 



MISSOURIAN 



Conemaugh 

 Fm. 



DESMOINESIAN 



Allegheny 

 Group 



ATOKAN 



MORROWAN 



Pottsville 

 Group 



CHESTERIAN 



Mauch Chunk 

 Fm. 



Greenbrier 

 Ls. 



VALMEYERAN 



Loyalhanna 



CO 



3 



o 

 a: 



o 



CD 



< 



JVIaccrady 

 Fm. 



KINDERHOOKIAN 



< c 



d o 



CO »- 

 a> 

 a. 



CL 



3 



w 



D 

 O 



<i 

 §1 



O 



-J 



STEPHANIAN 



WESTPHALIAN 



NAMURIAN 



CO 



3 

 O 



VISEAN 



TOURNAISIAN 



O 



3 



Q 

 Q 







CO 



z 



3 



o 



o 



CD 



rr 



rr 



UJ 



< 



U_ 



o 



z 



o 



QQ 



cr 

 < 

 o 



a: 

 lu 



o 



GSCHELIAN 



KASIMOVIAN 



MOSCOVIAN 



BASCHKIRIAN 



NAMURIAN 



VISEAN 



TOURNAISIAN 



Pig. 3 - Correlation of the time-stratigraphy of the Mississippian and Pennsylvanian Sys- 

 tems in the Midcontinent with that of the Carboniferous of Europe and the U.S.S.R. 

 (based on data published by the International Carboniferous Congresses). 



new species are reserved for the Monograph, which will contain complete descrip- 

 tions of all species found in Illinois. " The monograph was never completed, but 

 Noe^s paper (1925c) on the Pennsylvanian flora of northern Illinois was well re- 

 ceived by amateur collectors, and it provided a source of initial interest to out- 

 standing collectors Frederick O. Thompson and George Langford, Sr. (Darrah, 

 1969). 



The following year Noe prepared a short list (Noe, 1926) of the compres- 

 sion flora immediately above the Harrisburg (No. 5) Coal at Harrisburg in southern 

 Illinois and correlated it with the upper part of the Westphalian. This contradicted 

 his correlation of the Colchester (No. 2) Coal with the Stephanian. Trying to use 

 plant fossils more extensively for stratigraphic purposes, Noe" sent plant collec- 

 tions to Walther Gothan, a leading, strati graphically oriented paleobotanist in 

 Germany. Gothan and Hans Bode (both at the Prussian Geological Survey) corre- 

 lated the plant fossils from Mazon Creek with those of the Westphalian D of the 

 Piesbergand Saar di strict s . Noe' (1930a) discussed their findings and added informa- 

 tion on other plant- bearing beds and their position in the European time stratigraphy. 



Noe" (1931b) and White (1931) presented general papers on the climate of 

 the Pennsylvanian as indicated by plant fossils and summarized some of their ac- 

 cumulated knowledge. 



Noe intended to transfer his collection from the Walker Museum to the Illi- 

 nois State Geological Survey after retirement because he had collected most of 



