REPORT OF THE STATE PALEONTOLOGIST I903 347 



that can be observed in the Nearpass section. These shales have 



not been identified with certainty in New York State. Near 



Cuddebackville a few miles north from Port Jervis, somewhat 



similar shales, but containing iron pyrites, have been observed. 



They hold a position below the Decker Ferry formation, but 



the contact with the Decker Ferry could not be observed. The 



shales below the Decker Ferry as recognized at Accord have a 



somewhat similar appearance to the Poxino Island shale. In 



this section the Bossardville limestone which lies between the 



Poxino Island shale and the Decker Ferry formation could not 



be observed. It is probable, however, that the Bossardville 



limestone has failed by thinning out before this section is 



reached. The age of the Poxino Island shales has as yet not 



been definitely established, but they probably belong to the 



Salina. 



Bossardville limestone 



No outcrop of this formation has been recognized in New 



York State, though it probably extends from New Jersey into 



Ulster county. At the Nearpass section, 3 miles south of Port 



Jervis, its entire thickness is shown to be slightly more than 12 



feet. It directly overlies the Poxino Island shale and in litho- 



logic features it much resembles some thin banded layers of the 



Manlius limestone. This is the lowest member of the Ontaric 



formation in this section that is fossiliferous, but even this is 



only sparingly so. Leperditia altoides Weller is found 



quite abtmdantly in several of the thin layers in the upper 2 feet 



of the limestone. Besides the Leperditia a single individual of 



the genus Oncoceras was found. This species is in some respects 



similar to O. ovoid es Hall, but is smaller and probably a 



distinct species. The Bossardville limestone is regarded by the 



writer as a late representative of Salina time. 



Decker Ferry formation 

 The term Decker Ferry formation as recently applied by Wel- 

 ler in the New Jersey section includes all the strata between 

 the Bossardville limestone and the Rondout waterlime. The 

 upper 6 feet of the formation as described by Weller may, how- 



