398 The UprER Devonian Deposits of Maryland 



This fauna is similar to that on the Williams farm 3 miles west of 

 Altamont. There are some of the very argillaceous shales in which fos- 

 sils rarely occur. This zone is at the base of the Catskill formation 

 as represented on the Piedmont Folio and, probably, is stratigraphically 

 higher than the Chemung conglomerate. 



There are red shales alternating with olive by the side of the road after 

 crossing the upper part of Cherry Creek not far north of Bownan's 

 Corners. Only a few specimens of imperfectly preserved pelecypods 

 were found in some of the thicker sandy layers. The dip is heavy between 

 south and southeast. 



Exposure at Bed House. — Perhaps the best section of the Jennings 

 formation in the southwestern part of Garrett County is the outcrop on the 

 Northwestern Pike from Bownan's Comers west toward Red House. 

 Catskill rocks are shown on the pike to the east of the Corners and 

 on the lower part of the western slope of Backbone Mountain. The first 

 fossils were found west of the Corners. Bo'wnan's Corners are formed 

 by the Junction of the road from the north with the pike which is the 

 one along which the outcrops described for the upper part of Cherry 

 Creek occur. 



No. 1. Shales and thin sandstones by the roadside a short distance 

 west of Bownan's Corners. The first rocks are brownish-red to red argil- 

 laceous shales and thin sandstones, alternating with olive shales; but 

 farther west on the road they are all olive argillaceous shales, some of the 

 layers of which are quite porous. This part of the Jennings formation 

 seems to correspond with the " ochre division " of Rogers as described 

 in his Annual Reports of Virginia. In the mealy layers fossils are 

 quite abundant as, for example, specimens of Spirifer disjunctus Sowerhy, 

 Atrypa hystrix Hall, DouvilUna cayuta Hall, and especially the variety 

 of this species described by Dr. J. M. Clarke under the name of graciliora 

 which is abundant, together with some pelecypods. Above the red 

 shales some that are yellowish have bright red blotches and in the coarser 

 of these layers are specimens of Spirifer disjunctus Sowerby and other 

 fossils. 



No. 2. On the hill at the four corners southwest of Sunnyside are 

 olive shales and thin sandstones bv the side of the road but no fossils 



