644 



CLASSIFICATION OF MIOCENE STRATA. 



and, among others, for the profusion of nummulites in association with 

 shells characteristic of the Fontainebleau Sands. This association has 

 obliterated one of the supposed distinguishing characters of the beds 

 above and below the gypseous series, for nummulites have never been 

 traced in Belgium, French Flanders, England, or Germany, above the 

 zone of Ceritkium plicatum, or if so, in extremely small numbers, and 

 as exceptional cases. It was also thought by many geologists that the 

 principal upheaval or disturbing movements of the Alps occurred ex- 

 actly between the Lower and Middle Tertiary, or between the Eocene 

 and Miocene epochs, as usually defined in France, whereas the plentiful 

 occurrence of characteristic " Middle Tertiary" shells in the Diablerets, 

 proves that the greatest movements of the Alps belonged to an epoch 

 subsequent to the establishment of the Ceritkium plicatum and many 

 contemporary species in the Tertiary seas. 



I am not yet prepared to divide the Miocene strata of Europe into 

 Upper, Middle, and Lower, although the time is not far distant when 

 such a subdivision will become necessary and possible. Meanwhile, the 

 following modification of the Table at pp. 104, 105, is proposed, con- 

 sisting simply of a substitution of the term " Lower Miocene " for 

 " Upper Eocene," and of a subdivision of the Middle Eocene of the 

 same Table into two parts. 



Proposed Modification of the Table of Fossiliferous Strata, 

 pp. 104-105. 



6. UPPER 

 MIOCENE. 



7 A. UPPER 

 EOCENE. 



7 R MIDDLE 

 EOCENE. 



British Examples. 

 Wanting in the British Isles. 



C. LOWER I Hempstead Beds, Isle of Wight, 



MIOCENE. 1 P- 192. 



1. Bembridge Beds, Isle of Wight, 

 p. 203. 



2. Osborne Series, p. 210. 



3. Headon Series. Ibid. 



4. Barton Clay, p. 212. 



f 1. Bags 

 1 P- 213 



(_ 2. Warn 



_shot and Bracklesham Beds, 



213. 



anting. 



8. LOWER EOCENE. As in the table, p. 105. 



Foreign Equivalents and Synonyms. 



f Faluns of Touraine, p. 175. 

 Bolderberg Strata in Belgium, p. 

 178. 

 Sansans, near Pyrenees, South of 

 France. 

 Basin of Vienna, p. 179. 



Gres de Fontainebleau, p. 194. 



Caleaire de la Beauce. Ibid. 



Mayence basin, p. 190. 



Limburg beds, Belgium, p. 188. 



"Oligocene" strata of North Ger- 

 many. 



Nebraska beds in United States, p. 

 , 206. 



I. Gypseous Series of Montmartre, 

 p. 223. 



2 A 3. Caleaire Siliceux, p. 225 ; 

 or Travertin inferieur. 



i. Gres de Beauchamp, or Sablos 

 Moyens, p. 226. 



4. Laeken bed^, Belgium. 



1. Caleaire Grossier of Paris basin, 

 p. 226. 



2. Upper Soissonnais, Sands of 

 Cuisse-Lamotte. p. 228. 



1 & 2. Nummulitic formation of 

 Europe, Asia, &c, p. 229. 



