CLASSIFICATION OF MARINE TRIAS 391 
Aymatites, Kingites, Meekoceras, Koninckites, Gyronites, Paranorites, 
Proptychites, Flemingites, Parakymatites, Aspidites, Lecanites, Priono- 
lobus, Dinarites, Ceratites, Prionites, Celtites and Acrochordiceras. 
In the Himalayas the Jakutic stage is represented by the Swé- 
vobustus beds, whose fauna, as listed by Diener,’ consists of Cera- 
tites, Danubites, Hedenstremia, Meekoceras, Lecanites, Aspidites, 
Proptychites, and Flemingites, of species nearly related to, and in 
some cases identical with, forms known in the Salt Range Cera- 
tite sandstone. 
This stage is further known in northern Siberia, near the 
north of the Olenek River; Mojsisovics* has described its fauna, 
which consists of Dinarites, Ceratites, Sibirites, Meekoceras, Heden- 
stremia, Kingites, Prosphingites, Gontodiscus, Popanoceras, Pleur- 
onautilus, and Atractites. Two of the most characteristic species, 
Fledenstremia mopsisovicst Diener, and Ceratites subrobustus Mojsis- 
ovics, are common to the Olenek beds of Siberia, the Ceratite 
sandstone of the Salt Range, and the Swbrobustus beds of the 
Himalayas. 
In America the Lower Trias, and probably the Jakutic stage, 
is represented in the Meekoceras beds of the Aspen mountains in 
southeastern Idaho, the cephalopod fauna of which consists of 
Meekoceras gracilitatis White, M. aplanatum White, MZ. mushbachi- 
anum \Nhite, and Arcestes? sp? These species are somewhat 
related to forms from the Ceratite sandstone of the Salt Range, 
and during Jakutic time the western American seas must have 
been connected with those of India. 
In California there are strata that probably belong to the 
Jakutic stage; in the Santa Ana Mountains, Orange county, Mr. 
H. W. Fairbanks found in a massive black limestone fossils that 
probably indicate Lower Trias. They consisted of Psewdomonotis 
aff. clavai, a trachyostracan ammonite, and an undetermined 
brachiopod, probably Rhynchonella. Pseudomonotis clarat is diag- 
nostic for the Werfen beds, upper part of Lower Trias, in the 
‘Denkschr. K. Akad. Wiss. Wien., Math. Nat. Cl. Bd. LXII, 1895, pp. 571 et seq. 
?Arktische Triasfaunen. 
> 12th. An. Rep. U.S. Geol. Sury. Terr. Part 1, pp. 105-118. 
