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PROSSER: UPPER CARBONIFEROUS OF SOUTHERN KANSAS. 165 
tonwood limestone, although it does not closely resemble it as 
shown in its typical region, and furthermore the underlying rocks 
do not agree with those below the Cottonwood limestone in the 
Cottonwood valley. However, after a consideration of all the data 
at hand, it appears to correspond more nearly with the Cottonwood 
than with any of the other limestones in that part of this section 
where we may expect to find its horizon. The limestone is light 
gray to whitish in color, unless stained, and contains myriads of 
Fusulina with a few fragments of shells. The flint is more abund- 
ant than in the Cottonwood limestone farther north, and in this are 
abundant specimens of Fusulina. 
The shales and shaly limestones—No. 18—overlying this lme- 
stone are somewhat fossiliferous, the following species having been 
obtained: 
DAMP O OL IAN GOP UNG GI BO TRUI wiv ese the nna tila hate Marries Cea wove <4GG) 
Big ARMOLL I MAS) ML CMM UTR MIO Za COE oc hy Ski allidsis iota alar weal si 4 bo gue e, ole! ys EE) 
3. Allorisma subcuneatum M. and a ee OCA ynbaunenetiiaie vat, ality) 
4. Aviculopecten occidentalis (Shum. ) M. oud WVisrigr sro st gum miares oie EL) 
These shales do not agree in reference to the fauna with the yel- 
lowish, very fossiliferous shales which overlie the Cottonwood lime- 
stone in the central and northern parts of Kansas. Perhaps they 
represent the Cottonwood shales and with the subjacent limestone 
constitute the Cottonwood formation which will then have a thick- 
ness of 30% feet in this section. 
If the correlation of Nos. 16 and 17 of the above section, with 
the Cottonwood limestone, be correct, then the remaining 231 feet 
of the section commencing with No. 15 belong in the Wabaunsee 
formation. Nos. 12 andg are massive, light gray limestones, which 
also contain large numbers of Fusulina and great quantities of 
flint, especially No. 12 in which there is a conspicuous six inch 
layer of flint at the top and bottom of the stratum. In fact these 
limestones contain the greatest amount of flint seen in any part of 
the section, for in the Strong limestone or flint but a comparatively 
small amount of flint was seen. 
The yellowish shales alternating with these Fusulina limestones 
contain plenty of fossils, Spirifer cameratus Mort. occurring fre- 
quently in them; but it was not noticed above the limestone which 
is referred to the Cottonwood. ‘The shales of No. 13 furnished the 
following species: 
Spirifer cameratus Mort. . ta PGA ee BR Wore stiateh, GES) 
.  Spirifer (Martinia) Sci ONVEXUS Se PR CT OCI Tne) 
3. Athyris (Seminula) subtilita (Hall) Newb.............. 0 (@) 
