664 E. O. ULRICH INDEX TO "REVISION OF PALEOZOIC SYSTEMS" 



Page Plate 



Taff , J. A., on the Arbuckle Mountains section 661 



Tahlequah axis 490 



Tarphyceras cf . clarkei 6"° 



cf. seelyi 6T0 



Taxonomy, stratigraphic 574 



Tellico formation 414, 453 



sandstone 538, 539, 551, 555 27 



Tennessean 582 29 



Comparison of, with Ordovician 607 



deposits 475 



differential movements 427 



(late) Pennsy Iranian (early) period of diastrophic activity. 475 



system or period 425 



Tennessee basin 562, 566 



formations • • 27 



Formations in middle • • 29 



Formations in west . . 28 



"Tentaculite" limestone • . 28 



Tetradium cellulosum 321, 326, 519, 567, 671 



Tetragraptus 443 



amii Lapworth 677 



amii ? E. and W 678 



approximates Nich 677 



clarkei Rued 677 



clarkei var. nov 678 



f ruticosus Hall 677 



pendens E. and W 678 



cf . pendens E. and W 677 



quadribrachiatus Hall 677, 678 



serra Brong 677 



similis Hall 677 



similis var. nov 678 



Tetragraptus zone 652 



Thebes formation 423, 466 28 



Theresa . . 27 



passage beds 640 



Upper (Tribes Hill limestone) . . 27 



Thrusts. Transmission inland of suboceauic 447 



Tilting 535 



accomplished during interformational intervals 428 



continental. Differential effect on strand-line of 542 



Diagram illustrating 432 



Minor and local 411 



of land areas 405, 407 



Time boundary of geologic periods 590 



division a natural basis 597 



range of fossil species and genera 514 



required for migration of faunas 295 



scale, Basis for 577 



