MISSISSIPPIAN OF PHELPS COUNTY, MISSOURI 560 

 TABLE II— Concluded 



above have been described from higher formations only, but as 

 yet the exact range of the Mississippian fenestelloid species is 

 imperfectly known, and such species might well be represented in 

 the earlier faunas. The presence of such fossils as Centronelloidea 

 rowleyi, Rowleyella fabulites, Nucleospira obesa, and Ambocoelia 

 levicula, which are characteristic of the white chert division 

 of the Lower Burlington at Louisiana, Missouri, together 

 with the great assemblage of Lower Burlington forms, would 

 seem to indicate that this was the proper correlation for these 

 faunas. 



