368 The Upper Devonian Deposits of Maryland 



mens of Biichlola retrostriata v. Bucli and Badrites aciculus (Hall) 

 were found in them and some trails of animals. The rocks are of the 

 Woodmont member and from the lower part of the Jennings formation. 

 The cliff is from 75 to 80 feet in height and the dip apparently between 

 27° and 28° nearly east. 



No. 3. The lower part of Polish Mountain along Williams Road is 

 composed of thin, olive, argillaceous shales with some thin sandstone 

 layers as shown on its western side. In the midst of the shales forming 

 this zone is a buff to olive layer of mealy sandstone 2 or 3 inches in 

 thickness in which are numerous crinoid segments and shells as for 

 example Spirifer disjunctus Sowerby, Spirifer mesastrialis Hall, Spirifer 

 mesacostalis Hall, Atnjpa reticularis (Linne), Productella, Clionetes, and 

 a few other species. This layer apparently contains about the first of 

 the Chemung fauna, for fossils were not found below and the rocks above 

 for some distance are also barren, smooth, olive shales with olive quite 

 micaceous sandstones 6 inches or more in thickness. 



No. Jf. This is another thin layer containing a few fossils. The 

 stratum is an olive, mealy sandstone several inches in thickness in 

 which are undoubted specimens of Spirifer disjunctus Sowerby and Spi- 

 rifer mesastrialis Hall. The association of these two species of Spirifer 

 found in zones No. 3 and No. 4 is interesting because in New York 

 such occurrence is rather infrequent. Atrypa reticularis (Linne), Crin- 

 oid segments and a few other fossils were found. Loose on the surface 

 of the mountain at tliis locality are frequent blocks of brownish-red 

 sandstone. Brownish-red arenaceous shales and thin micaceous sand- 

 stones of similar color interstratified with buff to olive argillaceous shales 

 appear in place at the side of the road only a few feet above the top of 

 the fossiliferous layer of zone No. 4. 



No. 5. Reddish fine argillaceous shale by roadside. The color is 

 perhaps more of a brownish-red and not so bright as in tlie lowest bands 

 of red shale occurring farther west in Gan-ett County. Above are 

 shales of olive color which weather to a buff. 



No. 6. A stratum of quite heavy, compact grayish sandstone which 

 shatters on weathering but still forms a fairly conspicuous ledge by the 



