REPORT OP THE STATE PALEONTOLOGIST 1902 



1193 



the White lime quarry, Old quarry, and Cloonan's quarry extend 

 along the strike of the formation northward. There are also 

 extensive quarries in the edge of the Becraft on the hill between 

 Port Ewen station on the West Shore Railroad and the Wilbur 

 bridge over Rondout creek, and the transition from the New 

 Scotland to the Becraft can be well studied on the hillside over 

 the southeast portal of the West Shore tunnel, about 2 miles 

 south from the Vlightberg. 



At a few points the Becraft limestone forms ridges of low 

 relief, as is generally the case with such massive pure limestones, 

 but it has as a rule suffered extensive denudation by solution and 

 it occupies the hollows or lies under the lee of protecting ledges 

 of the Port Ewen beds. On the North hill there are two " veins " 

 of the Becraft, one in its normal position near the eastern edge of 

 the hill, the second on the overthrust block, running parallel to 

 the first vein and from 700 to 1100 feet west of it. 



FAUNA OP THE BECRAPT LIMESTONE 



Middle 



Aspidocrinus scutelliformis Hall, aa 

 Spirifer concinnus Hall, aa 

 Atrypa reticularis Linne, c 

 Lichenalia sp. ?, c 

 Meristella sp.?, c 

 Rhipidomella oblata Hall, c 

 Gypidula pseudogaleata Hall, a 

 Rensselaer ia aequiradiata (Conrad), c 

 Uncinulus nobilis Hall, c 



portion 



U. campbellanus (Hall), aa 

 Stropheodonta becki Hall, a 

 Rhynchotrema formosum Hall, 

 Rhynehonella transversa Hall, c 

 Schizophoria multistriata Hall, c 

 Phacops logani Hall, r 

 Stropheodonta cf. varistriata 

 rad), c 



(Con- 



Gypidula pseudogaleata Hall, a 

 Atrypa reticularis Linne, a 

 Spirifer concinnus Hall, a 

 Rhipidomella oblata Hall, c 

 Crinoid fragments, a 



FAUNA OP THE UPPER BECRAPT 



Silicified fossils in clay 



Stropheodonta arata HalL r 

 Leptaena rhomboidalis (Wilck), c 

 Nucleospira ventricosa Hall, c 

 Spirifer perlamellosus Hall, c 

 Oriskania (?) sp.?, r 



Port Ewen limestone 

 Above the Becraft limestone is a formation which, because of 

 its influence on the topography of the vicinity, is one of the 

 most important of the series. It was first noted by Davis [1883, 

 p. 390] 1 , who called it the "Upper Shaly limestone " in contra- 

 distinction to the " Lower " or " Catskill Shaly limestone," now 



1 See Works mentioned in the text, p. 1227. 



