TRIASSIC SYSTEM. 5f 
to calcareous shales and shaly limestones, and, with the exception of 
the bed of coral limestone in the lower part of the series, the rocks 
consist almost entirely of shales with intercalated bands of sandstone ; 
in fact the series consists broadly of two thick beds of calcareous shale 
or very shaly limestone, separated by the massive coral limestone and 
overlain by brown and white quartzites ; this group is thus easily 
recognised on the mountain sides, even at considerable distances. 
The lower part of the first shaly series (i) is composed of sandy 
limestones, passing up into sandstones and calcareous shales which 
contain, in addition to numerous indeterminate plant remains, a few 
brachiopods and bivalves with fragments of ammonites, including — 
Hauerites sp. 
Hauerites (?) n. f. ind., Mojs.' and 
Paratibetites cf. ternqutsti, Mojs. 
The bivalves include — 
Mystdioptera sp. 
Avicula sp. 
Modiola sp. 
Anodontophora griesbachi, Bittner. 
This horizon was correlated by Dr. von Krafft with the " Hauerites 
beds" (Diener) of the more easterly sections of the Himalayas. 
The overlying shales contain large numbers of ammonites; they are 
to a great extent fragmentary, but most of their 
Juvavites beds. . , .,, , • , i-, 
important characters can still be recognised. By 
far the commonest genus is Juvavites, of which a few forms belong 
to the groups of " intermittentes " and "scissi," but the great majority 
approach the "continui " (Mojsisovics). Other forms represented are 
Paratibetites turnquisti, Mojs. 
Tibetites cf. ryalli, Mojs. 
• Anatibetites n. sp. aff. kelvini, Mojs. 
Clionites aff. hughesi, Mojs. 
Ditfmarttes n. sp. 
Pinacoceras sp. 
Phylloceras sp. ind. 
Pleuronautilus aff. tibeticus, Mojs. 
» Pal. Ir.dica, ser. XV, vol. Ill, pt. i, p. 88. 
( 8i ) 
