ees
and on the island of Timor. The earliest Karnian, or earliest Upper Trisssic,
fauna is the Trachyceras fauna. It, too, has a wide distribution on the site
of ancient Tethys, for examole in the Raibl beds and Feuerkogel of the
Salzkammerzut (Hallstadt area) of Upver Austria, in the St. Cassian beds of
the South Tyrol, in the upver part of the Roten Kalke of Greece, in Dobrudscha
and probably in the uover vart of the Daonella limestone and part of the Grey
shale of Spiti.

Isculites schooleri resemoles Isculites ladinus Welter from the Ladinian
Protrachyceras archelaus fauna of Timor. Sagenites gethingi is closest to the
eroup of Sagenites inermis Hauer in the Alvine faunas « However, it is not
identical with any Alpine species of th: t srouv. Protrachyceras sikanianum
shows considerable resemblance to Protrachyceras Longobardicum Mojsisovics
from the late Ladinian zone of Protrachyceras archelaus in the Alps.
Protrachyocras zauwae is Aine: to the late Ladinian spinose species -

Protrachyceras archelaus Lau»e than to the early Karnian spinose species

Protrachyceras septemspinatum Mojsisovics» Paratrachyceras sutherlandi shows
some resemblance to the specimen figured as Paratrachyceras. regoledanum

Mojsisevies by Arthaber from the late Ladinian of Bithynia. Paratrachyceras

aylardi somewhat resembles the late Ladinian species Paratrachyceras
richthofeni Mojsis.vics. Not being a true Sirenites, the species Sirenites
agginae affords no definite evidence of age. Dawsonites is not known beyond
the boreal resions of northeastern British Columoia, and is of no value in
correlating with other regions. Asklevioceras affords no satisfactory
evidence of age; Asklepioceras laurenci has the same style of ornament as
Nee e ae seoemontatum Mojsisovics of early Karnian aze, and probably
also as Asklepioceras redlichi Kittl of late Ladinian age.

Among the velecypods no Halobia has yet deen found in the Nathorstites
fauna of northeastern British Columbia. However Daonella is represented
by to eee of which, Daonella nitanae, resembles closely Ladinian
svecies Daonella lommeli Wissmann: Daonella is common in the Middle
Triassic and very rare in the peer Triassic where SiS “sips Rloparaney replaced by
the closely related Halobias ;

The absence of svecies of Halobia, Trachyceras and true Sirenites

favour a late Ladinian rather than an early Karnian ALE e