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



Page Plate 



Expansional evolution 495 



Extinction of organic forms 513 



Fairview limestone 509, 



Faulting at margin of continental shelf 



Normal 



Faults, Diagram illustrating hypothesis of origin and location of 



normal 



Faunal breaks, Explanation of 



changes, occasioned by crustai deformation 



distribution, Control of marine currents 



evolution. Locus of 



realms 



Varying time values of 



Faunas, Fossil 



invading from Gulf of Mexico 



"Matching" of 



Migrations of 



of continental seas, Source of 



Rate of change of 



Shifting of 295, 574, 



Successive, Causes of difference in 



Uniform composition of widely transgressing 



Fayetteville shale 



formation 



Fenestella tenax 



Fern Glen formation 



Fernvale bed of Richmond 



fauna 



formation 



formation, Extent, relations, etcetera, of 



limestone 309, 310, 



Finkelnburgia 



First appearance of fossil species and faunas 



Flanagan chert 



limestone 416, 



Florida dome tilting 



Geologic map of north-central 



Foerste, A. F.. on Silurian and Devonian formations of Kentucky. 

 Folding 



Cause of 



Migration inland of Appalachian 



Folly limestone 



Formation names. Relation to time terms of 



Formations. Overlapping _ 3gg 



Fort Atkinson limestone 



Fort Cassin fauna 



Fort Defiance axis 



Fort Loudon section in Pennsylvania 



512 

 441 

 432 



433 



495 

 577 

 517 

 594 

 483 

 511 

 482 

 486 

 331 

 354 

 498 

 576 

 575 

 576 

 303 

 530 



594 



426 

 298 

 422 

 421 

 305 

 530 

 643 

 592 



429 

 430 

 431 

 393 

 434 

 439 

 435 

 480 

 392 

 450 



661 

 564 

 326 



27 



29 



29 



28 



28 



