570 BULLETIN" 103, UNITED STATES NATIONAL MUSEUM. 



With regard to the age of the Midway flora, he says: 1 "The 

 European floras most similar to that of the Midway (?) are those, 

 likewise poorly represented in marine deposits, of the Montian and 

 Thanetian stages in the so-called Paris Basin in northern France,, 

 Belgium, and southeastern England." 



He concludes his discussion of the correlation of the Wilcox floras 

 with the following statement: 2 "In view of the foregoing discussion, I 

 have no hesitation in making the most positive statement that the 

 Wilcox flora is largely of Ypresian age. This is rendered conclusive 

 by the exact agreement between the flora of the overlying Claiborne 

 group and that of the Lutetian of Europe, as brought out in my un- 

 published studies of the Claiborne flora." 



The foregoing paragraph contains Berry's opinion in 1916 as to 

 the equivalence of the Claiborne group of the southern United States 

 with the Lutetian of western Europe. This is an old correlation, for 

 it is the same as that made by De Lapparent. 3 More recent studies, 

 not yet published, have led Berry to correlate the Claiborne flora of 

 the southeastern United States with the Auversian of Europe, and 

 he grants me permission to present his conclusion in this connection. 



As a part of my discussion of the coral faunas of the Jackson forma- 

 tion and its correlatives, page 198 of this volume, I have expressed my 

 opinion that the Jacksonian of Mississippi and Albama is the equiva- 

 lent of the Bartonian-Ludian of western Europe, thereby concurring 

 in a previously expressed opinion of Haug, which is essentially the 

 same as that of De Lapparent. 4 In fact, this opinion seems generally 

 accepted by all geologists who have studied the subject. 



OLIGOCENE. 



That the Vicksburgian Oligocene is the equivalent of the European 

 Tongrian 5 -Sannoisian-Lattorfian has long been recognized and needs- 

 only mention in this place. 



As a part of the discussion of the coral faunas, pages 199-207 of 

 this volume, I have correlated the basal part of the Chattahoochee 

 formation with the Rupelian-Stampian of western Europe. Thia 

 conclusion, which seems to me firmly established, is new for the- 

 marine Tertiary formations of continental North America. 



That the Tampa formation of Florida is the equivalent of the Euro- 

 pean Aquitanian, which seems to include the Chattian, is generally 

 acknowledged. This is the opinion of W. H. Dall and M. Cossmann, 



1 U. S. Geol. Survey, Prof. Paper 91, p. 11. 



* Idem. p. 152. 



a De Lapparent, A., Traits de geologic, p. 1454, 1900. 

 4 Traite' de g6oIogie, ed. 4, p. 1473. 



* Maury, Carlotta J., A comparison of the Oligocene of western Europe and the southern United States,. 

 Bull. Amer. Paleontology, vol. 3, No. 15, pp. 313-404, pis. 20-29, 1902. Here it should be noted that Tongrian 

 has been used in two senses, one as the equivalent of the lower (Lattorflan) and the other as the equivalent 

 of the middle (Rupelian) Oligocene. Miss Maury used it in the former sense. 



