394 The Upper Devonian Deposits of Maryland 



numerous specimens of Douvillina cayuta Hall, similar to those on the 

 road north of Deer Park, and a few other species were noticed. A few 

 thin bands of red shales were seen alternating with the buff shale and 

 the zone is near the transition from the clear olive shales to the alternation 

 of red and olive shales. To the east of this zone are the blocks of the 

 fiat pebble conglomerate as shown, on this road directly west of the branch 

 of Ness Lick Eun. As far as shown at this locality the rocks are all 

 dipping westward so that the fossiliferous horizon is, stratigraphieally, 

 considerably above that of the conglomerate. 



No. 2. Directly above the house and bend in the highway, and a 

 little farther west than the fossiliferous zone described above are buff to 

 greenish thin sandstones which become hard on weathering and contain 

 fine specimens of Spirifer disjuncius Sowerby and Airy pa hystrix Hall 

 M'ith some other fossils especially Schizophoria striatula, var. mary- 

 landica Clarke; but the first two species are the abundant ones of this 

 zone which is near the top of the ridge about three-fourths of a mile west 

 of the intersection of this road and the one north of Mountain Lake Park. 

 The section is similar to those north of Deer Park and shows in its lower 

 part the zone with abundant specimens of Douvillina cayuta Hall and 

 higher, the one with abundant specimens of Spirifer disjunctv^ Sowerby. 

 The rock is stained here and there with red and yellowish spots. The 

 blocks containing fossils extend to the top of the hill at the eastern edge 

 of the woods and loose in the field just east of the woods are quite large 

 blocks of greenish-gray sandstone, weathering to a rusty color, in which 

 are some fossils though not nearly as many as there are a little lower on 

 the highway. These blocks, however, still contain specimens of Spirifer 

 disjunctus Sowerby and the rocks to the top of this ridge clearly belong 

 in the Chemung stage of the Jennings formation. 



No. 3. On the western side of tlie liill the rocks are not continuously 

 exposed to the valley of the small run but for part of the distance they 

 dip to the southeast, showing a reversal of the dip, and this renders it 

 difficult to make any careful estimate of their thickness. There are 

 outcrops of olive, argillaceous shales and sandy layers with tliin bands 

 of red sliale. In some of the blocks fossils were found, as, for example, 



