STRATIGRAPHICAL GEOLOGY. 



487 



He distinguished this particular biographical province as the 

 Juvavic Province. According to Mojsisovics, the beginning of 

 the era represented by the Karnic division of the Upper Trias 

 was marked by the re-opening of a wider communication 

 between the " Juvavic Province " and the much more extensive 

 Mediterranean Province on the south and west of it ; this view 

 was based by Mojsisovics upon his identification of many 

 species in the higher portions of the Hallstatt limestone, which 

 enjoyed a wider distribution in the Triassic limestone and 

 dolomite of the Eastern Alps. 



Whereas Mojsisovics in his earlier works had not attributed 

 much importance to the differences of facies which had been 

 pointed out by Richthofen, Giimbel, and others, these relations 

 were now fully appreciated and made a leading feature in his 

 sub-division of the Trias. The Triassic zones were now defined 

 quite independently of their lithographical characters, solely 

 upon pal?eontological characteristics, and were sub divided 

 according to their marine faunas : 



Rhaetic Division 



4. Karnic Division 



to 



(/,.) 



(a.) 



Dachstein limestone and Kossen 

 strata. 



Main Dolomite. 



Raibl or Cardita strata. 



Zone of Trachyceras Aonoides. 



St. Cassian strata and the middle 

 portion of the Hallstatt marble 

 (zone of Am. subbullatus). 



Zone of Daonella (Halobia) Lommeli 

 and Trachyceras Archelaus (Wengen 

 strata, Lower Hallstatt limestone, 

 Potschen limestone, Partnach marls 

 in part, and Wetterstein limestone). 



Zone of Trachyceras Reitzi (Buchen- 

 stein strata in South Tyrol; Zlam- 

 bach strata in North Tyrol). 



Zone of Am. Studeri and Daonella 



Parthanensis. 

 Zone of Trachyceras Balatoniciim and 



Retzia trigonella. 



i. Bunter sandstone, as in earlier sub-divisions, concludes with 

 the Campil series of micaceous sandstones. 



3. Noric Division 



2. 



Muschelkalk 



(a.) 



