KEUl’ER HOCKS. 
57 
species of Spirifer are known to range upwards into the ooli¬ 
tic rocks, and hence their presence might be more easily ac¬ 
counted for. 
The genus Athjris (or Spirigera, for palaeontologists use 
both names) is, with the rarest exception, a truly palaeozoic 
form. Yet it is found here mixed with Terebratula and Wald - 
lieimia of a very modern aspect. Ammonites of all sizes, 
from a lew inches to three feet in diameter, are the character¬ 
istic shells of the deposit. But with them Yon Hauer has 
described very early forms of the Turrilite , Scaphite, and even 
Baculite groups, which show a simpler character in the 
sutures* than any known in more modern rocks—thus re¬ 
minding us of palaeozoic types. Again, the Orthoceraiiles 
found in these triassic beds present in most of the forms a 
truly lateral siphuncle like that of the alveolus of the Belem- 
nite—and sometimes even (in Aulacoceras ) a thickened 
exterior coat, which must have been formed, one would think, 
« 
in the way the guard of the Belemnite was made, viz., by 
successive deposits on the outside from the enclosing mantle 
lobes. 
While, therefore, there is a positive intermixture, though 
less than appears at-first sight, of truly palaeozoic and second¬ 
ary forms, there is also in many respects an evident passage 
from the types that characterize the older to those typical of 
the newer systems of life. 
The Himalaya fossils of this age are but few. But the 
most striking and common forms among them are the species 
most characteristic of the same strata in the Alps. I am 
compelled to this opinion, though I had long thought the 
species were only closely related to the European forms, by 
the personal inspection of Professor Suess, of Vienna. His 
knowledge of the Alpine species is unquestionable, and 
* Sitzung-Berichte tier Kais. Akad. Wissenchaft, Band. 41. Dr. Suess 
found, and communicated to Prof. Hauer these precious materials,— Cochloce- 
ras, Rhabdoceras, and Clydonites. 
VOL. II. 
I 
