INDEX TO HUDSON RIVER BEDS NEAR ALBANY 



595 



Scliizocrania fllosa, 520*, 524^. 

 Schizocrinus nodosus, 501^ 53# 



536^ 

 Scbizotreta conica, 571'. 



minutula, 571^ 571«-72^. 



ovalis, 571^. 



paipilliformis, 570''-72^; explan- 

 ation of plate, 585^ 



pelopea, 571*. 

 Sclincliert, Charles, cited, 584", 514', 



54^, 566*, mr. 



Shaler, N. S., cited, 582^ 553', 557^ 



South Bethlehem, outcrops of Lor- 

 raine beds, 518^. 



South Cohoes, 517'. 



South Troy, Brothers's quarry, 535''- 

 37*; Ruscher's quarry, 537°; 

 Cahill's hill, 539'; Poesten kill, 

 539'-40'; middle Trenton shales, 

 562«. 



Spathiocaris, 577®. 



Sphenothallus, 516^ 



Sponge, 520^. 



Spyroceras bilineatum, 525'', 527", 

 561^ 



Stations, description of, 513®-44*. 



Streptelasma corniculum, 544®. 



Streptorhynchus filitexta ?, 505*. 

 planumbona, 505^ 



Stromatocerium, 545^. 



Stromatopora compacta, 501*. 



Strophomena alternata, 499^ 50CP, 

 501% 50P, 503% 505^. 

 incurvata, 525% 544», 54i5«, 548«. 

 rug-osa var. subtenta, 525% 



Summary of paper, 567^-68*. 



Taconic, use of term, 494". 

 Taxonomic position of the Normans 



kill graptolite beds, 550*^2*. 

 Technophorus cancellatus, 525*, 

 572^; explanation of plate, 

 586% 

 subacuitus, 573*. 

 Tellinomya dubia, 502*. 

 levata, 502*. 



Tetradella, 575% 



Tetradlum cellulosnan, 544% 



Trematis terminalis, 502*. 



Trenton beds, correlation with Hud- 

 son river beds, 491% 497%'505%512?'; 

 middle, 533^-38% 567"; upper and 

 middle, 5'51^; conglomerate bed of 

 lower Trenton aspect in shale, 

 5444.463. clastic development of in 

 Hudson river valley, 558*-61''; 

 thickness and fossil contents, 559^; 

 discontinuity of faunistic suc- 

 cession, 561"^64^; of the Hudson 

 valley, do not continue westward, 

 565^; 



fauna: 499^-502% 505% 521% 533«- 

 38% 562^; epicontinental origin, 

 510% 563^; of conglomerate beds 

 of Rysedorph hill, 551^; in Utica 

 beds, 564% 



Trenton period, proposed term, 500". 



Triarthrus becki, 502% 508% 516^, 

 521% 526% 532% 563^ 



Trinucleus concentricus, 502®, 505% 

 507% 515% 516% 517% 518% 521% 526% 

 526% 



Troy, stations, 537^; Mt Olympus, 

 540^-41% 



Turrilepas (?) filosus, 521% 577^-78'; 

 explanation of plate, 587% 

 newberryi, 577^-78% 



Typicalis, use of term, 523% 



Ulrich, E. O., cited, 583% 500% 506% 

 536% 536% 546% 573*, 574*, 575% 576« 



Upper Dicellograptus zone, 511% 

 522% 567% 



Utica shale of Normans kill, 489% 



Utica shales, in the Hudson valley, 

 491% 493% 502«; homotaxial with 

 Normans kill shale, 492% 497*; 

 Normans kill beds included in, 

 498'; testing, 519"; description, 519»- 

 33^; thickness, 560*; discontinuity 

 of faunistic succession, 56r-64^; 



