206 CHARLES S. PROSSER 
erly quarry system, sixty feet; and Cleveland shales fifteen 
hee te: 
There was also reported a band of red or chocolate colored 
shale from fifteen to twenty feet in thickness at Taylor’s Station, 
Jefferson township, and at several points in the eastern bank of 
Big Walnut Creek in Mifflin and Blendon townships,? which Dr. 
Orton considered the uppermost part of the Huron shale. This 
red shale, however, and the overlying Waverly shales represent 
the Bedford shale of Dr. Newberry’s classification in northern 
Ohio. The Waverly quarry system is the Berea grit, although 
Dr. Orton in referring to Professor N. H. Winchell’s report on 
Delaware county, in which outcrops at Sunbury and other locali- 
ties in that county are correlated with the Berea grit, stated that 
“The Sunbury stone is erroneously referred in Vol. I | Vol. IT], 
p. 282, toa higher division of the Waverly, viz., the Berea grit.” 3 
Finally, Dr. Orton stated, concerning the upper division of the 
Waverly as reported for Franklin county, that: 
The Cleveland shale of Dr. Newberry, the Waverly black shale of 
Professor Andrews, .... is known at but a single locality in the county, 
viz., at Ealy’s Mills, in Jefferson township, on the banks of Rocky Fork. 
From ten to fifteen feet of this formation are here shown within the compass 
of anacre. The stone immediately underlying the black shale is quarried 
for local use, so that the line of junction is very distinctly seen at several 
points. The black shale lies upon the flat surface of the sandstone without 
the interposition of any other material whatever. A geological boundary 
cannot be more distinct than this. .... The surfaces of many slabs are 
thickly covered with the teeth and plates, and bones of the sharks and ganoids 
of this early day. Two brachiopods also, Limgula melie Hall, and Dzscina 
Newberryt Hall, are abundant here, sometimes wholly covering the surface 
of the beds. The anomalous but very interesting fossils termed conodonts 
are found in great numbers and in exquisite preservation in the shales of this 
locality. 4 
It is now known that the Cleveland shale is older than the 
Waverly black shale of Professor Andrews, and that the black 
shale on Rocky Fork is the continuation of the Berea shale of 
t Rept. Geol. Surv. Ohio, Vol. U1, Pt. I, “Geology,” p. 639. 
2 Tbid., p. 638. 3 [bid., p. 642. 4 [bid., p. 642. 
