INDEX TO HUDSON RIVER BEDS NEAR ALBANY 



59a 



Lorraine beds, description, 513®-19'; 

 fauna, 493*, 498^ 513«-19«, 521«; 

 faunas correlated with Normans 

 kill faunas, 496^; epicontinental 

 origin of fauna, 563'; Hudson 

 river beds correlated with, 491', 

 495^; of Hudson valley, westward 

 trend, 565^; testing, 519*; thick- 

 ness, 560^. 



Lorraine shales, term, 492^ 



Lower Dicellograptus zone, 511', 

 567^ See also Normans kill shales. 



Lowville limestone, 544^ 



Lyrodesma pOststriatum, 502', 516^ 

 516^ 525'. 

 pulchellum, 493', 516», 525'. _ 



i, : : ,,i' Mil' 

 Maclurea, 559*. 



Macronotella, 545*. 



Map, description of, 581^. 



Marsouin river zone, 506^ 509*. 



Mather, W. W., cited, 581', 581^ 



490P-92^ 499^ 553«. 



Matthew, G. F., cited, 583^ 562». 



Mechanicsville, 519^-23?. 



Menands, railroad station, 527*. 



Miller, S. A., cited, 573». 



Minnesota, report on geology, cited, 



583*. 



Modiolopsis anodontoides, 516^ 



faba, 516^, 526". 



modiolaris, 520^ 521», 522*. 



nuculiformis, 493', 516^ 516*, 

 520^. 

 Monograptus serratulus, 496^. 

 Moordener kill, Castleton, 543'-44». 

 Mt Moreno, alternation of green 



slate with graptoli*e shales, 550^. 

 Mt Olympus, Troy, 540^-41^ 

 Murchisonia, 559*. 



gracilis, 493', 502'. 



uniangulata var. abbreviata, 

 525^ 526P. 



NemagrapsTis capillaris, 5^". 



elegans, 528^ 

 Nicholson, H. A., cited, 581'. 



Normans kill, 543'; ravine by, 531*. 



Normans kill shales, stratigraphic 

 assignment, 489', 550^-52*; homotax- 

 ial with Utica shale, 492^ 561^; in- 

 eluded in Utica slate, 498^; Mo- 

 hawkian age, 498'; equivalent 

 with certain strata of Canada, 

 505^-6^ correlated with Frankfort 

 shales, 507*; assignment by New 

 York and Canadian geologists, 

 508^; result of former investiga- 

 tions, 512^-13^; description of 

 beds, 538^-50^; conglomerate beds 

 of lower Trenton aspect, 544M9", 

 558^; lower Trenton age, 510^, 511', 

 512^ 547^ 567®; eastern repre- 

 sentative of part of the lower 

 Trenton, 557^-58^; taxonomic posi- 

 tion, 489', 550^-52^; resting on 

 lower Trenton limestone, 550^ 

 558^; thickness, 560^; use, of term, 

 566^, 567', 568^; summary of paper, 

 567^-68*; 



fauna: 498*, 496«, 497^ 498^ 

 503*, 507', 538^-50^; correlated with 

 Lorraine faunas, 49*6®; homotaxy 

 with that of Utica shale, 497^; 

 lower Trenton age, 510^, 511', 512«, 

 5478; European and Ajtlantic con- 

 nections, 510«; origin of, 562^ 563', 



Normansville, 530'-31». 



North Ttoy, 537'. 



Orthis (?) centrilineata, 515^ 

 lynx, 501*, 503'. 

 pectinella, 499^, 500«, 500^, 501', 



505=^. 

 plicatella, 505'. 

 testudinaria, 499^ 500^ 500% 



502*, 503', 5052, 507'. 

 tricenaria, 500^*, 501«. 

 Orthoceras, 501*. 



bilineatum ?, 502«. 

 lineolatum, 525". 

 tenuitextum, 525'. 

 Orthograptus quadrimucronatus, 

 514% 527«, 528^, 580*, 531«. 



