WILLIAMS.] 
FAUNAS OF THE ASHLAND SHALES. 
49 
Fauna of 1296 F 
Strophomena rhomboidalis. 
Leptsena transversal is. 
Pentamerus oblongus. 
Spirifer radiatus. 
Atrypu cf. obtusiplicata. 
6. Atrypa cf. reticularis. 
7. Orthothetes sp. 
8. Several other brachiopod fragments. 
9. A few crinoid segments. 
In the above lists the species cited are generally of small size for the 
species represented. Leptcena transversalis is found in almost every 
case, and in each of the very sparse collections is generally represented 
by more than one specimen. The species was evidently very common. 
The fauna of the Sheridan sandstone presents affinities with both the 
Clinton and the Niagara of New York. It is believed that the Sheri- 
dan sandstone precedes the Ashland limestones, whose fauna is 
described elsewhere. However, the actual stratigraphic relationship 
of the limestone to the Sheridan sandstone has not been observed. 
Bilobites kilobits is not recorded from the Clinton. On the other hand, 
Anoplotheca hemispherica is a Clinton species. It represents the upper 
part of the Anticosti group. 
ASHLAND SHALES. 
Ashland Village. — In Ashland Village, along the road opposite the 
hotel, and southward toward Masardis, are several outcrops of lime- 
stones, calcareous shales, and sandstones which present stratigraphic 
relationship to one another, but on account of the shear planes and 
semislated structure, as well as the intervals unexposed, some doubt 
must be held regarding the accuracy of the interpretation. 
The strike of the various exposures examined is northeasterly (N. 
80° E., N. 85° E., N. 30°-50° E.), and the dip northwesterly at 
angles of 60°, 75°, and 55°, thus giving the impression that the 
exposures on the north-south road are lower toward the south. 
The irregular, blocklike masses of limestone opposite the hotel are 
met on the southern side by yellowish, weathered shales. There is 
then an interval of several hundred feet south of 1098 A 1 showing no 
rock exposures. 
On the east side of the road there is a rock cut (1098 A 3), about 
400 feet south of the hotel. The rocks in this exposure are calcareous, 
thin-bedded shales, somewhat nodular and weathering yellowish from 
iron oxide. Some layers contain nearly pure argillaceous shales, 
others are calcareous. The calcareous layers are all somewhat arena- 
ceous, showing pebbles of quartz, jaspers, and siliceous slates, mingled 
with broken calcareous shells, and an approach to the conditions of 
the Sheridan sandstone. 
Bull. 165 4 
