XII 
ERIK A : SON STENSIO 
triadischen und vielleicht z. T. auch noch untertriadischen Alters sein. Es scheint mir 
noch keineswegs wahrscheinlich, dal3 der Bareninsel die untere Trias vollig fehlen sollte; 
mindestens miissen aber Aquivalente der Mitteltrias in dem unteren machtigen Schichten- 
komplex enthalten sein. Auch kann ich in dem Komplex des Myophorien-Sandsteins und 
des 44 m fossilfuhrenden Schiefers unter ihm, deren Fossilfauna von J. Bohm beschrieben 
worden ist, keinen faunistisch und stratigraphisch einheitlichen Horizont sehen, sondern 
halte ihn fur das Aquivalent aller oberen Horizonte der Spitzbergener Trias.» 
Stolley’s views on the whole with regard to the different divisions of the Triassic 
of Ice Fjord can be summarized as follows: 
Horizon with Lingula polaris etc. 
» » Nathorstites etc. 
Daonella beds. 
Fauna of Bivalves. 
Lower saurian horizon. 
Horizon with Ceratites costatus and possibly 
also C. vega and C. lindstromi. 
Posidonomya horizon characterized especially 
by Gyronites aplanatum and weakly sculptured 
Ceratites species. 
In 1912 appeared a paper by Wittenburg in which «Werfener Schichten» were 
shown to exist on the Axel Island. The same year Bohm also published his investigations 
on the Triassic evertebrates from Bell Sound; his paper does not, however, contain 
anything new of importance beyond his preliminary communication to Nathorst in 1910. 
In 1914 Wiman (1914a, pp. 17— 22), in connection with the description of the 
Carboniferous Brachiopods of Spitzbergens, dealt with the series of strata up till then 
taken to be Permian. After a detailed examination of the fauna in this series of strata 
he comes to the conclusion that the question of the age must still in the main be 
considered an open one. He considers, however, that we most probably ought to look 
upon a part of the series of strata above the Hustedia limestone as lower Triassic. In 
a paper on the Stegocephalians from the Triassic of Spitzbergen published the same 
year Wiman gives (1914 b, pp. 3 —9) a number of newer stratigraphical observations and 
makes important contributions to our knowledge of the fish horizon ( Posidonomya bed) 
and he also mentions a new vertebrate-bearing horizon in the uppermost Triassic at 
Mt Lundbohm. Two year later (1916 b) Wiman still continues to uphold his view of 
1910 as to the upper and middle Triassic. With regard to the lower Triassic he holds 
the same view as in 1914. In 1917 Wiman published some fresh additional stratigraphical 
observations. 
In 1916 Diener in a rather long treatise dealt, among- other things, with the Trias 
of Spitzbergen. He criticises (pp. 413—414} the view put forward by Stolley as to the 
age of the Daonella beds and follows Mojsisovics with regard to them. On the other hand 
he adopts Stolley’s view as to Posidonomya strata. His views as to the conditions of 
age of the different strata may as a whole be summarized in the following table: 
Upper Trias { Carnic staf;e ' ' 
[ Ladinic stage . 
Middle Trias < 
Lower Trias j 
