S94 



NEW YORK STATE MUSEUM 



Outcrops, discovery of, 513*. 

 Overturn of strata, explanation of, 



552^-58^ 



:Pacliydictya, 545^ 



acuta, 536^ - 

 Parastrophia hemiplicata, 525^ 564*. 

 Paterula, 562*, 569^ 



amii, 569'; explanation of plate, 

 585^ 

 Pelecypoda, 572^-73^ 

 Penitentiary, Albany, 530^. 

 Peoble's island, Waterford, 524S 

 Petraia corniculum, 501^, 501®. . 

 Pholidops subtruncata, 520% 521", 



522\ 525\ 526\ 

 Plates, explanation of, 585^-88*. 

 Platystrophia biforata, 515% 516% 



534% 536% 545% 

 Plectambonites aff. gibbosa, 545% 

 545% 547% 561% 

 plicatella, 520% 521% 

 sericea, 515% 520=, 526% 527% 

 534% 536% 564% 



var. aspera, 525% 527% 544", 

 545% 548% 561% 

 Plectortbis plicatella, 525% 52^, 527% 



584% 536% 

 Pleurotomaria cf. lenticularis, 525% 

 Plumulites sp.?, 502% 

 Poesten kiU, South Troy, 589^-40^. 

 Point L6vis shales, 494% 495% 

 Pollicipes carinatus, 580*. 



siluricus, 521% 526^; description, 

 578^-81^; explanation of plate, 

 587^-88% 

 Pontobdellopsis cometa, 520% 529^; 

 description, 574^; explanation of 

 plate, 586% 

 Port Schuyler, Fitzgerald's quarry, 



534^-35% 

 Potsdam limestone, 544% 

 Prasopora, 536^. 



Primordial (Quebec) age of Hudson 

 river beds, 494% 



Proetus parviusculus, 536% 56*2?. 



cf. parviusculus, 535% 

 Prosser. 0. S., cited, 583% 583% 584% 



519^, 559% 560^. 

 Protowarthia cancellata, 520®, 52)5% 

 Pterotheca, 580% 

 Pterygometopus, 546% 



cal'licephalus, 525®, 545% 545% 

 54r, 585^. 

 Ptilodictya acuta, 501% 501% 

 Pulaski shale, 492% 492^.. 



Quebec, term, 566®. 



Rafinesquina alternata, 516% 525*, 

 526% 534% 536^, 545% 

 deltoidea, 527% 

 Ravine by Normans kill, 531% 

 Receptaculites, 501-. 

 References, 581'-84% 

 Remopleurides, 510*, 561% 562% 



linguatus, 546^. 

 Rensselaer, 543% 

 Rhombodictyon, 540*. 

 Rhynchonella capax, 501% 

 Rhynchotrema increbescens, 536*, 



544% 

 Richmond stage, 566% 

 Roemer, Ferd. cited, 584% 528% 547% 

 Rogers, W. B. & H. D., cited, 581% 



554% 

 Ruedemann, Rudolf, cited, 584*, 



562% 

 Rural cemetery, Albany, 528^-29% 

 Ruscher's quarry, South Troy, 537*. 

 Rysedorph Hill, conglomerate bed, 



546*-49% 



Sagenella sp., 516% 



ambigua, 532% 532?. 

 Sardeson, F. W., cited, 584% 514% 

 Scalpellum, 578% 



fossula, 580% 



quadratum, 580% 

 Schizambon (?) fissus var. canaden- 

 sis, 529^. 



