Quart. Journ. Geol. Soc. vol. ix. Table to face p. 244.] 



Middle Rhine 

 Boulonii^Sandberger). 



Limestone. \ 2 



.{: 



Coal- 

 measures. 



0:::: 



Zones characterized 

 Terebratula elongata. 



Higher r 1. . . 

 Mountain < 2. . . 

 Limestone. L 3. . . 



Produetus giganteus. 



Lower f Great . . . . „ . . . . 



Mountain \ ShaleP'iomyen-scliiefer . . Posidonia Becheri ; Goniatites cremstna. 



Limestone. LDoIoiI 



Yellow 



Sandstone 



Group. 



Ferques 



and 

 Fiennes 

 Group. 



rShale fl- 



J Yelloi)j.idinen-scliiefer</ ^.Cypndina serratostriata, Sandb. 

 S j^e,j g ^ Calymene granulata ; Goniatites bifrons. 



1 Fossil L3. Cucullaea Haidingeri ; C. trapezium. 



fCoral'^^lstein Sphseronites tessellatus. 



Shale[Qjjjj^g Cyrtoceras, pi. sp. 



I^oloi Stringocephalus Burtini ; Brontes flabel- 



Shale: lifer. 



I Sl^c^estone of Villmar. . Calceola sandalina. 



|_ Shale 



fSand! 

 Red I 

 Blaci 



•{ Lime' 



of Wissenbach. . . . Pleurodictyon problematicum. 



r sandstone series, . Spirifer macropterus. 



