'53 
UPPER TRIAS ; OR 
lie assures me that tlie “ Hallstadt” beds of the Carinthian 
Alps have a peculiar band of dark slate; tenanted almost ex¬ 
clusively by two fossils. One is the llalolia (Avicula) Lommelii 
of Munster ; the other; Ammonites Jloridus of Wiilfen. These 
are the two conspicuous fossil species in the Himalaya series. 
Mixed with them we also find other European species. Am¬ 
monites Aon , in one or other of its Protean forms; is; perhaps, 
as characteristic a fossil as can be selected from the Tyrolese 
limestones. The Amin. Ausselanus and Amm. coangustatus are 
also European species; while no one can mistake the little 
deformed fossil Ammonites diffissiis of Hauer. The Tyrol and 
Himalayan specimens have the minutest points of structure 
identical. The Nation subglohulosa and the two species of 
Orthoceras are identical,—the Pecten most probably so. 
The Bracliiopoda, being probably from deeper water, might 
perhaps have been expected to show points of resemblance, if 
there were any communication between the seas in those 
ancient times. And accordingly the characteristic shells, Atliy- 
ris Deslongschampsn, A. Strohmeyeri, the minute but charac¬ 
teristic PJiynehonella retrocita, with the Waldheimia Stoppani, 
are all identifiable, and were easily recognized by Professor 
Suess, who had described these species. After careful exami¬ 
nation I am fully disposed to adopt his opinion.* 
The same forms, or some of them, occur in the Spiti Pass. 
Professor Oldham finds in that region a great distinction be¬ 
tween the lower mass of strata inclosing the Triassic fauna, and 
that above it, which is loaded with Oolitic and Liassic types. 
The Ammonites are of like forms to those of the Alps, though 
I do not yet recognize any of the species as exactly identical. 
But with them occurs a most remarkable fossil—a laro*e 
Spirifer—which Dr. Gerard also brought home in abundance 
from the same locality, and which I here figure, as it is close¬ 
ly allied to, if not identical with, a shell (S. Keilhavii , Yon 
* Only the names of the genera were given by me in the notes to the paper 
above quoted.— Quart. Journ. Gcol. Soc., vol. vii., p. 305. 
