386 VANES, SABICISIN, SHIT al 
how to identify the pelagic equivalents of Buntsandstone, Mus- 
chelkalk and Keuper, since those inland deposits never contain 
any of the open-sea species. 
Instead of being the type of the Trias, the Germanic basin 
sediments are the exception, and the type is to be sought in 
strata that were laid down along the borders of open seas. These 
have long been known in the limestones and shales of the Alps, 
Himalayas, Salt Range, Siberia, and western America, but the 
nomenclature has always been obscured by local names without 
meaning except to the man that gave them. There is, therefore, 
an urgent need for some uniform system of nomenclature by 
which Triassic open-sea sediments may be correlated directly 
with each other, without reference to the old and unrecognizable 
- divisions. < 
Quite recently the Vienna geologists, Dr. E. von Mojsisovics, 
Dr. W. Waagen, and Dr. C. Diener, have attempted to give the 
desired classification, in a paper entitled: ‘“‘ Entwurf einer Glie- 
derung der pelagischen Sedimente des Trias-Systems,’’* The 
authors divide the Triassic pelagic deposits into four series, Scy- 
thic, Dinaric, Tirolic, and Bajuvaric; and these again into stages 
and substages, and further into zones, the latter having usually 
only a local value. The present paper is based largely on 
the classification of Mojsisovics, Waagen, and Diener, and is 
intended to show the relations of American marine strata to 
those of the European and. Asiatic regions; the accompanying 
correlation table is adapted from that of the same authors, as is 
also the nomenclature of the subdivisions. 
Geography of the Tras. The principal regions where Triassic 
faunas are known are the Alpine province, the Himalayas and 
Salt Range, northern Siberia, and western America. The faunas 
of these countries seem to be so different that they may be taken 
as representing ancient geographic regions.” In Mesozoic times 
« Sitzungsber. Kais. Akad. Wissenschaften Wien. Math. Nat. Cl. Bd. CIV., Abth. 
I. December 1895, pp. I-32. 
2 Mojsisovics, Arktische Triasfaunen, Mém. Acad. Impér. Sci. St. Petersbourg, VII. 
Ser. Tome 36, No. 5. 
