188 Report of the State Geologist. 



1. Productella, sp. (a) 



Apparently between P. speciosa, Hall, and P. lachrymosa. 

 (Con.), Hall. One of the specimens is truncated at the beak. 



2. Atrypa reticularis (Linne), Dal. (rr) 



3. Palmomilo constricta (Con.), Hall. (rr) 



Almost identical with the small one figured on plate 48, figure 

 16 (Palaeontology of New York, Vol. V, Part I), from Ithaca, 



n. y. 



4. Coral, sp. (rr) 



5. Actinopteria eta, Hall (?). (rr) 



XXIV D 4 . Ledges of coarse, arenaceous shales on the hillside west of 

 Pool creek, three and one-third miles east of Noblesville and about three- 

 quarters of a mile northeast of Gilbert's lake. The shales merge into thin 

 sandstones which, on the weathered surfaces, are brownish from iron stain. 

 The ledges show a heavy dip to the southwest. According to the barometer, 

 this locality is 125 feet higher than D 5 , and 320 feet above D fi . In these shales 

 specimens of Atrypa and Productella are common, the complete fauna being: 



1. Atrypa reticularis (Linne), Dal. (c) 



2. Productella, sp. (c) 



The specimens are large, with wrinkles and folds on the ears. 



3. Chonetes setigera, Hall. (rr) 



4. Grrawnmysia suba/rcuata, Hall (?). (rr) 



From a hasty examination of this region I was not able to positively 

 determine the formation, and it is quite possible that on the accompanying 

 geologic map the top of the Hamilton is represented somewhat too far to 

 the south in the valley of Pool creek. 



XXIV D s+ . On the divide between Pool creek and Fall brook, one and 

 one-half miles east of D 4 , are thin bluish and olive shales in which no fossils 

 were found. This locality is in the southeastern part of New Lisbon, school 

 district No. 16, and is, according to the barometer, 470 feet above the level of 

 Otego creek at Mt. Vision, two and one-half miles to the southeast. 



AAV V D 3 . On the eastern side of the hill, by the roadside, about 110 

 feet below D 3+ , are rather argillaceous shales in which Hamilton fossils are 

 common, especially typical specimens of Spirifer mucronatus (Con.), Bill. 

 These shales are clearly in the Hamilton formation, the top of which is then 

 fully •"><*><» feet above the level of Otego creek at this place. The fossils are: 



1. Spirifer mucroiuitus (Con.), Bill. (a) 



2. Amboccelia umbonata (0on.\ Hall. (c) 



