LINGULELLA 647 



Page Plate 



Lingulella acutangula 623 



desiderata 613, 623 



ino 623 



similis . 613, 623 



tarpa 623 



texana 623 



Lingulepsis acuminata , 613 



Linnarsonella girtyi 623 



Liospira canadensis 653, 670 



strigata 657 



Lithistida 501 



I.ithologic unconformity, Criteria for 464 



Correlation of dissimilar units 523 



scale 290 



sequence 525 



similarity, Correlation by 519 



units, Apparent stratigrapliic hiatuses included by 526 



Lithological and gradational criteria 467 



Lithology, Lateral change in 477 



Lithosphere, Differential vertical movements of 405 



Littoral conditions recorded by initial deposits 456 



faunas, Possibilities of migration of 355 



Littorina littorea, Rate of migration of 295, 575 



Little Falls dolomite 443, 528, 612, 643 27 



Llano 476 



Loading, sectionary, Relation to oscillations of 432 



Local stratigraphic terms 387 



Localization in development of Paleozoic faunas 501 



Lockport dolomite 561 28 



Locus of f aunal evolution and antecedent occurrences . '. 594 



Logan sandstone . . 29 



Longwood shale . . 28 



Lookout sandstone . . 29 



Lophospira gregaria ? 654 



Lorraine shales 297 27 



Loudon formation 617 



Louisiana limestone 426 29 



Louisville coral zone . . 28 



limestone 307 28 



Lowville in east Tennessee 569 



Evidence of uniform sedimentation of 318 



fauna 518, 576 



formation 550 



horizon in Chambersburg limestone 325 



(Bird's-eye) limestone, Geographic distribution of 20(5 



limestone 443, 457, 520, 523, 540. 557, (171 



Overlap of 554 



Relations to contiguous format ions of 686 



Lowville (Tyrone) limestone 41!) 



