A STUDY OF THE FAUNAS OF THE RESIDUAL MISSIS- 



SIPPIAN OF PHELPS COUNTY (CENTRAL 



OZARK REGION), MISSOURI 



JOSIAH BRIDGE 

 University of Chicago 



In the reports of the early writers on the geology of the Ozark 

 region in Missouri mention is made of scattered patches of bowlders 

 containing fossils of "Chemung age" occurring in counties where 

 no rocks of this age are in place or where they are but sparingly 

 represented. 



The investigations of Shumard, Meek, and Broadhead for the 

 Missouri Bureau of Geology and Mines, between 1855 and 187 1, 

 published in 1873, mention such bowlders from Maries, Miller, 

 Morgan, Phelps, Wright, and Ozark counties. 1 This list of local- 

 ities is doubtless incomplete, since much of the region was not 

 examined by these workers. Meek assigned these bowlders to the 

 Lower Carboniferous, but Shumard and Broadhead employ the 

 older term Chemung. Shortly before the publication of the report, 

 the so-called "Chemung Group" of the older Missouri geologists 

 was shown to be Lower Carboniferous, and in a footnote in Shum- 

 ard's report on Ozark County, 2 he states that the term Chemung 

 as employed in these reports is to be understood to mean Lower 

 Carboniferous. 



Broadhead again mentions these deposits in his report for 

 1873-74, as follows: "Fragmentary outliers of this group [Chou- 

 teau] are occasionally found capping the ridges near the Arkansas 

 line." 3 



1 Missouri Bur. of Geol. and Mines, Reports of the Geological Survey of the State 

 of Missouri, 1855-71 (1873). See reports of the various counties named above. 



2 Ibid., p. 190. 



3 G. C. Broadhead in Missouri Bur. of Geol. and Mines, Reports of the Geological 

 Survey of the State of Missouri, 1873-74 (1874), p. 27. 



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