STRATIGRAPIIICAL GEOLOGY. 



463 



Friedrichs- 

 hall Lime- 

 stone (Up. 

 Muschel- 

 kalk). 



Anhydrite 



Group 

 (Mid. Mus- 

 chelkalk). 



Wellen- 

 kalk Group, 

 (Lr. Mus- 

 chelkalk). 



Bunter 



Sandstone 



Group. 



SUB-DIVISION OF GERMAN 

 TRIAS. 



rDolomitic limestone 

 Friedrichshall limestone 

 Oolitic rock (Rogenstein) 



.Encrinite limestone 



Dolomite, marls, porous 

 limestones, bituminous 

 limestone, gypsum, an- 

 hydrite, clay and rock- 

 salt. 



'Wellenkalk (wavy limestone) 

 Wellendolomit (wavy dolo- 

 mite). 



Variegated clays and marls, 

 chiefly red clays with gyp- 

 sum and salt. 



Bunter sandstone - 



" Vogesen sandstone " (false- 

 bedded fine sandstone in- 

 terbedded with dolomite 

 and oolite). 



PAL^EONTOLOG ICAL 

 CHARACTER. 



Trigonodus Sandbergeri, etc. 

 i Lima striata, Tetebratula 

 | vulgaris, Nautilus bidor- 



\ satiiSj Ceratites nodosns, 

 etc., richly fossiliferous. 



Encrinus liliiformis, etc. 



Saurian remains occasionally 

 occur, otherwise poor in 

 fossils. 



Richly fossiliferous, Tere- 

 bratula vulgaris, T. an- 

 gusta^ Spiriferina fragilis, 

 Gervillia costata, Myopho- 

 ria elegans, etc. Encrinus 

 liliiformis. 



Myophoria cost at a, M. vul~ 

 gar is, plant remains, Equi- 

 setztm, Voltzia, etc. 



Labyrinthodont remains and 

 amphibian footprints. 



Estheria mimtta, etc.' 



later literature on German Trias is very voluminous. 

 Giimbel, Sandberger, and Thiirach have materially advanced 

 the stratigraphical and palaeontological knowledge of this 

 subject by their exhaustive studies of Bavarian areas. Daubre'e, 

 Benecke, and Lepsius have been amongst the geologists who 

 have investigated the Trias in Alsace-Lorraine. In the Rhine 

 provinces, Weiss and Blanckenhorn have been the chief 

 workers. The isolated Triassic outcrop at Riidersdorf, near 

 Berlin, has been made the subject of a monograph by Eck, 

 and the Upper Silesian area of Trias has been described by 

 Eck and Ferdinand Roemer. 



Only after a clear exposition had been obtained of the 

 general stratigraphical relations of the Trias in extra-Alpine 

 European localities, could the difficult task be seriously com- 

 menced of unravelling the tangled skein of the Triassic rocks 

 in the Alps. To determine the relations of Triassic rocks in 



