S'lG The UrPER Devonian Deposits of Maryland 



(Conrad), Atrypa hysirix Hall, Choncies sp., Clionetcs lepidifornvis 

 Clarke, Cyrtina hamiltonensis Hall, Spirifer mesastrialis Hall. 



A^o. 6. By the side of the road in Millstone are thin, olive, micaceous 

 shales alternating with thin bedded, olive sandstones all of which are 

 in the Woodmont member of the Jennings formation. No fossils were 

 found in these rocks. The dip is about 40° S., 10° E. 



No. 7. In the western part of Millstone is a blocky sandstone, near 

 the axis of the anticlinal fold, which belongs in the Hamilton stage 

 of the Eomney formation. The rocks of zone No. 7 were described 

 under the section of the Eomney at Millstone. 



No. 8. By the side of the road to the west of Millstone and just east 

 of the first creek west of that village, are olive, thin bedded shales alter- 

 nating with thin sandstones. In the excavation immediately east of the 

 creek is a band of brownish-red shale similar to that described in the 

 Upper Chemung in the outcrops east of Millstone. One of the layers con- 

 tains a large and long Crinoid stem and this was the only fossil found at 

 this locality. The red shale is about 6 feet in thickness and some of the 

 olive shales are fairly thick and quite arenaceous. From this locality to 

 the vicinity of Hancock, the rocks are not well exposed but they belong in 

 the Jennings formation with the exception of the Catskill belt from Pig- 

 skin Ridge to the western slope of Timber Eidge. The important thing to 

 note in the lithological characters of this section is the early appearance 

 of bands of red shale as compared with the section to be described in 

 Allegany County. In the more western sections the red rocks made their 

 first appearance well i;p in the Chemung and above a fauna composed 

 of a number of characteristic species of that stage ; while east of Han- 

 cock they occur below the Chemung. This earlier appearance of the 

 conditions toward the east favorable for the deposition of the red rocks 

 agrees with their occurrence in southern New York, where in the eastern 

 part they begin as a continuous mass of red and green rocks fully as early 

 in time as in this section, while along the southern border half-way across 

 the state they are not seen until near the close of the Chemung stage. 



Exposwe hetiveen Tonolowaij Ridge and Sidelinf/ Hill. — There is a 

 ledge of quite massive greenish-gray sandstone on the National Eoad about 



