76 



NEW YORK STATE MTJSEUM 



em line of arenaceous limestones from Cuddebackville to Port Jervis 

 the species are those characteristic of these calcareous beds in the 

 localities already considered, to wit (Ries) : 



Platyostoma depressum 

 Tentaculites elongatus 

 Orbiculoidea grandis 

 Chonostrophia complanata 

 Spirifer murchisoni 



Meristella lata 

 Leptocoelia flabellites 

 Coelospira dichotoma 

 Eatonia peculiaris 

 Edriocrinus sacculus 



The difference in the lithologic character of these beds on the 

 eastei'n and the western flanks of the eroded Appalachian ridge is 

 striking and may be construed as evincing the nearer approach of the 

 easterly silicious and pebbly beds to the ancient shore line. 



At Port Jervis the sections exposed at the Nearpass, Buckley and 

 Bennett quarries have been given by Dr S. T. Barrett.' Here are 150 

 feet of the upper shaly (Kingston) beds lying above the Becraft lime- 

 stone, and these are followed by the calcareous strata (5-10 feet) termed 

 by Mather and Horton the Trilobite beds, which are specially characterized 

 by the presence of Dalmanites dentatus Barrett. 



Dr Barrett gives the following species as occurring in this stratum: 



Horaalonotus vanuxemi 

 Dalmanites pleuroptjx 

 D. iiasutus 

 D. deutatus 

 [D. dolphi] 

 Hyolithes centennialis 

 Tentaculites elongatus 

 Holopea antiqua 

 Loxonema fitchana 

 Pterin ea textilis 

 Leptaena rhomboidalis 

 Strophonella conradi 

 Stropheodonta planulata 



Strophonella cavumbona 

 S. leaven worthana 

 Stropheodonta becki 

 Braehjprion varistriatum 

 Chonostrophia complanata 

 Eensselaeria mutabilis 

 Orthis subcarinata 

 O. multistriata 

 Spirifer murchisoni 

 Cjrtina rostrata 

 Orbiculoidea discus 

 O. conradi 

 Schizocrania (?) superincreta 



' Amer. jour. sci. 1877. 13 : 386. 



