168 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [DeC. 13, 



■pjg*. 1 Monte Spitz. 



Jura limestone and dolomite 12 f j— r—tlA 



Sandstone 11 i5S]^;n2I]^ 



Upper triassic limestones with f ^^ f^tttf ^ ^^^ Trias of the Tyrol resting 



many fossils I 9 __________" \ on mica schist and capped 



f 8 ""~^.""". ~~j ~. by Jurassic dolomite. 



Calcareous flagstones, &c < 7 '^^ -^r-^^^^^i^ :s\ 



1 6 I I I I I I I I I I ri 



Red and green marls 5 =Zr-£ZIr-=I^— £I^^X 



Sandy limestone 4 rTj J J '^ 1 ijj ! — !-r7^~T:T^ 



Red sandstone and conglomerate/ ^ ^^??^~i:K^'c^T^'7t^r^SC:;V;y.^;S^^^^ j 



with coal ( 9 '-V,' •^^V•^^^,i>A>lL:ili-^-^-^^^?~~N ' 



Dlica and stea- schist . 



contains no plants on whose forms reliance could be placed, and it 

 may prove to be a lower portion of the " bunter sandstein." Indeed, 

 the whole stratum is of too feeble dimensions (not exceeding 40 to 50 

 feet) to require more illustration. It graduates upwards through 

 calciferous sandstones (4) into red and green marls (5), which un- 

 questionably belong to the trias, as proved by fossils found in them. 

 The overlying beds of trias are various bands of limestone (6, 7, 8), 

 one of which is slightly oolitic, which alternate with red marly and 

 sandy beds ; and whilst certain bivalves, such as Myacites, &c., 

 occur in the lower flagstone strata, the upper masses (9, 10) have af- 

 forded the greatest number of good and peculiar muschelkalk fossils. 

 It was in this band that Professor Briinner, jun., in a previous year, 

 detected the beautiful Encrinite since named E. gracilis by V. Buch. 

 From this band we also collected many fragments of the B. liliformis 

 with Terebratula vulgaris, &c., as well as forms common to the lower 

 strata of the group. Above this are sandstones (11) and Jurassic 

 dolomitic limestone (12). 



In the deep ravines which lie to the north and west of Recoaro, 

 similar successions of red sandstone, limestone and marls are observed. 

 Fossils occur most abundantly in the ridges of shelly limestone east 

 of Rovegliano (Communda Pass) and at Civelina, where slabs of 

 flaggy limestone are absolutely covered with Trigonise (Trigonelhtes), 

 with Terebratvla vulgaris, Myacites, and other characteristic fossils 

 of the muschelkalk ; the deep denudation frequently exposing the 

 same descending order. In one of the lower fossil beds of yellowish 

 earthy limestone associated with reddish layers, our clever guide de- 

 tected the Spirifer fragilis * . 



With these very clear proofs of the full development of the trias in 

 the localities already cited, there is every reason to believe, that the 

 equivalents of the system (not, however, always fossiliferous) may be 

 traced continuously along certain zones throughout the Eastern Alps, 

 and particularly where red rocks and limestone rise out from beneath 

 the great masses of alpine (lias and Jura) limestone, and repose upon 



* This guide, Castellan, is recommended to geologists as an expert finder of 

 fossils. 



