ILLUSTRATIONS. 



Page. 

 Plates I-III. Fos.'iil plants from <ho Midway (?) 



formation of Earlc, Tex 18-20 



IV. A, Exposure of fos.-iiliferou.'i clay of 

 Wilcox age in the Lagrange forma- 

 tion at Purj'ear, Tenn.; B, Ex- 

 posure of fossiliferous clay in the 

 Holly Springs sand at Oxford , Miss . 38 

 V. A, Calcareous concrtrtions in sands 

 of the Wilcox group at Shreveport, 

 La.; B. Lignite balls iti sands of 

 the WiU-ox group at Leigh, Tex . . 39 

 VI. A, Fossiliferous laniiiiated clay of 

 the upper (Grenada) formation of 

 the Wilcox group at Grenada, 

 Miss. ; B, Sands of Wilcox age in 

 the Lagrange formation at La 



Grange, Tenn 44 



VII. .1, Habitat of the nipa palm, Nipa 

 fructicans, Luzon, Philippine Is- 

 lands; B, Habitatof the black man- 

 grove, Avicennia nitida, Ponce, 



Porto Rico 177 



VIII. Rocky shore of St. Croix, Danish 

 West Indies, showing Coccolobis 



association 213 



IX-CXVII. Fossil plants from the Wilcox 



group 35.5-406 



Figure 1. Diagram showing oscillations of the 

 strand line in the Mississippi embay- 

 mcnt during earlier Eocene time St 



2. Section of Wilcox deposits at Oxford, 



Miss 41 



3. Diagrammatic section of Wilcox de- 



posits near Grand Junction, Tenn... 44 



4. Sketch map showing areas of distribu- 



tion of recent and fossil species of 



Juglans 79 



4 



Page. 

 Figure 5. Sketch map showing areas of distribu- 

 tion of recent and fossil species of 

 Engelhardtia and ( )reomunnea 80 



6. Sketch map showing the ])resciit area 



of distribution of the mcjre important 

 genera of Proteacea- 84 



7. Sketch map showing areas of distiibu- 



tion of recent and fossil species of 

 Grewia and Grewiopsis 1 11 



8 Map showing the maximum extent of 



the Mi<lway transgression 134 



9. Map showing the strand line at the 

 beginning of Wilcox dej)osition. the 

 maximum extent of the Wilcox trans- 

 gression, and the northern limit of 

 the Wilcox flora under existing 

 climatic conditions 135 



10. Columnar sections showing approxi- 



mately the stratigraphic relations of 

 the more important planl-bearing 

 outcro])S of the Wilcox formation 144 



11. Sketch maji showing the aiea of Wilcox 



sedimentation and the location of 

 fossil floras with wliich that of the 

 Wilcox has been compared 150 



12. Restoration of a leaf of Chanisedorea danai 



(Lesquereux) Berry 180 



13. Restoration of C'u^sia V'Hcoxiana Berry. 231 



14. Restoration of I'liKurus angustus Berry 



(leaves) and PaKurus mississippiensis 

 Berry (fruits) 281 



15. Re.storation of Bombacitis fonnosiis 



Berry 290 



16. Restoration of a leaf of Oreopannx ox- 



fordetisis Berry 330 



