90 The American Geologist. August, uos. 
Produetus setigenin Hall. Folypora corticoaa Ulrich. 
Stenopora ramosa Ulrich. FenesieUa cestriensis Ulrich. 
Anistrypa solida Ulrich. Fenestella flexuosa Ulrich. 
Anistrypa fistulom (Kaskaskia Archimedes compactus Ulrich. 
variety.) Archimedes intermedius Ulrich. 
Batostomella abrnpta Ulrich. Archimedes invciginatus Ulrich. 
The Seneca specimens are not now at hand and a list of 
them cannot now be given. 
The fossils taken indicated clearly that they belong to the 
Kaskaskia fauna. The crinoids and bryozoans are particularly 
characteristic species of the typical locality of that formation 
on the Mississippi river, and are also widely distributed forms 
which range through Kentucky and beyond. 
These limited deposits of Kaskaskia rocks are clearly rem- 
nants of beds which were once much more widely distributed 
but have been almost entirely obliterated through erosion. 
Further south in the Boston mountains of northwestern Ar- 
kansas they are thought to be extensively developed. 
From what has been said it may be inferred that, in south- 
west Missouri : 
1. Both the inferior and superior portions of the Mississip- 
pian or Low^er Carboniferous are present. 
2. In faunal, lithological and stratigraphical features the 
Burlington limestones are practically the same as at the typi- 
cal locality and that throughout this wide range their charac- 
teristics are remarkably well preserved. 
3. The upper part of the superior portion of the Lower Car- 
boniferous is not well represented and is altogether absent 
over much of the area. 
4. The uppermost member of the series contains the typical 
Kaskaskia fauna. 
5. The Coal Measures rest unconformably on all the older 
strata represented in the district, and in the vicinity of Seda- 
lia and to the southward the overlap is very much more pro- 
nounced than elsewhere. 
The explanation of the somewhat ananiolous features pre- 
sented by the Lower Carboniferous formations of southwest 
Missouri is found in the stratigraphical rather than in the 
faunal evidence. Further, the physical changes that the re- 
gion has undei'gone are corroborated by the phenomena which 
are known to have taken place in other parts of interior basin. 
