GEOGRAPHIC RELATIONS OF TRIAS OF CALIFORNIA 783 
ence that they were connected in Permian time, and separated 
after that until Jakutic time. 
Tivolites and other members of the Tirolitinaee are conspicu- 
ously lacking in the Indian region, and this is true also of the 
Inyo beds. On the other hand Dinarites is entirely lacking in 
the Lower Trias of the Himalayas, and in the Salt Range below 
the Ceratite sandstone of the Jakutic, the species described as 
D. minutus Waagen, from the Ceratite marls, having turned out 
to be a Ceratites. And since the Dinaritine are known in the 
Lower Trias of the Mediterranean region, the Inyo fauna seems 
to have been intermediate between that and the Indian, although 
much more intimately connected, during the Brahmanic stage, 
with the Oriental region. 
Gabb* cites Gontatites levidorsatus Hauer from a locality thir- 
teen miles north of Owens’ Lake, from the foothills on the east 
side of the valley. E. von Mojsisovics? says that this ammonite 
is not Hauer’s species, and not even in the same genus with it, 
Celtites, but belong to the group of Ceratites obsoleti, subgenus 
Danubites, chiefly characteristic of the Lower Trias. It seems, 
therefore, that the credit for the discovery of this formation in 
California must be given to the State Geological Survey under 
Whitney. 
MIDDLE TRIAS 
Of the faunal relations of Middle Trias little is to be said, 
because undoubted fossils of this age are not yet known in the 
state, nor, indeed, anywhere in America. The writer? has 
described a series of siliceous slates that probably belong in part 
to the Muschelkalk, but the evidence is merely stratigraphic, 
the known fossils being too poor to be of any use. The occur- 
rence, at Silverthorn’s Ferry on Pitt River, of a number of inde- 
terminable ammonites, one of which resembles Ptychites, holds 
out the hope of future decisive discoveries. It seems likely, too, 
Dal Calit. WOl.lspse2te 
? Arktische Triasfaunen, p. 20. 
3Jour. GEOL.; Vol. II., 1394, No. 6. The Metamorphic Series of Shasta county, 
Calfornia. 
