332 University Geological Survey of Kansas. 
abundant only in the northern section at Lawrence and Le-- 
compton. In the case of the last-named species its lack of oc- 
currence at Burlington is probably due to the fact that the: 
bituminous shales below the upper Oread were not exposed 
there. 
The collections from Stage G and the base of Stage H are 
all from the Kansas river region. , 
The Emporia limestone has more of a molluscan fauna at 
Emporia than its equivalents on the Kansas river. Aganides 
sp., Gastrioceras sp., Pleurotomaria perhumerosa Meek, and 
another gastropod and Nuculana attenuata Meek are fairly 
abundant at Emporia. 
The fossils from the Americus limestone recorded here were 
taken from the type locality only, as doubt exists as to its 
equivalent on the Kansas river. 
The Neva limestone is nearly unfossiliferous in the northern 
part of the state, and the most of the fossils recorded for it. 
were collected from near Hooser, Cowley county. : 
The Florena shales present a somewhat different faunal as-. 
semblage in the southern region from what they do at Cotton- 
wood Falls and Florena. The sediments are less calcareous 
and the differences in the fossils consist largely of the dilution 
of the northern fauna by the addition of other species from the 
rocks below. At Grand Summit the part played by senile 
seninulas, chonetes and derbyas is relatively less, while fusu- 
linas and other species become much more abundant. The list 
increases from about thirty-five species in the north to seventy- 
three at Grand Summit. Nineteen of these species are repre-. 
sented in our collections by from 30 to 500 specimens each from 
an exposure of about a square rod at Grand Summit. 
The remarks concerning the general faunal character of the: 
Florena shales are doubly applicable to the Neosho formation. 
It increases from about thirty species in the northern part of 
the state to ninety in the southern part. In the former region 
the specimens are, relatively, as rare as the species. In the 
southern region the older species found a more favorable en-. 
vironment, and many which had disappeared in the northern 
region persisted in this part of the sea so that the exposure at: 
Grand Summit has many reminders of Meek’s classic “‘Ne- 
braska City Section,” though it is much higher in actual hori-. 
zon. 
some of the more striking features of the southern region 
