FAUNAS OF SOUTHEASTERN ALASKA 329 
is a common species in the western American Devonian, and is also 
found in the Ural Mountains. At another locality C. W. Wright has 
found Spirifer disjunctus. The discovery of these fossils distinctly 
proves the presence of the Upper Devonian fauna in southeastern 
Alaska. In many of the sections, however, the fauna will probably 
be found to be absent, owing to the prevalence of submarine volcanic 
flows during the Upper Devonian interval. 
The Devonian section of southeastern Alaska resembles that of 
the Upper Yukon in respect to the important réle played by igneous 
rocks in each. So far as the two sections are known, however, the 
sedimentary members present no strong points of similarity, except 
that the lowest member of each is a limestone formation. The 
faunas of the two regions are entirely unlike each other. The Mac- 
kenzie River section, which is the nearest Canadian Devonian section 
of which we have any very definite knowledge,’ appears to have no 
strong points of resemblance, either lithologic or faunal, to the south- 
eastern Alaskan section. 
A few other localities besides those mentioned have furnished 
small collections of Devonian fossils. The small number of well- 
known species, or the poor state of preservation of the material from 
these localities, makes it undesirable to offer an opinion as to the 
horizons represented without considerable reservation. In one of these 
lots, which was collected from limestone beds on the south side of 
Kosciusko Peninsula, are crinoid stems, Spirorbis sp., Atrypa sp., 
Cyrtina cf. billingst Meek, Meristella cf. barrist Hall, Cranaena cf. 
romingert Hall, Orthis cf. arcuata Phillips, Plewrotomaria sp. 
Devonian fossils have been reported also from Kuiu Island by 
Professor Charles Schuchert.? In describing a collection obtained 
by Dall and Becker from Saginaw Bay, Kuiu Island (8), he states that 
they ‘unmistakably indicate the presence there of Carboniferous 
and Devonian strata.”’3 A careful examination of the locality from 
which Schuchert’s fossils came failed to discover any Devonian 
horizon. Recently the fossils which were considered Devonian by 
t Canadian Geological Survey, Contributions to Paleontology, Vol. I, Part 3 (1891), 
p- 250; Transactions of the Chicago Academy of Science, Vol. I (1867-69), pp. 61- 
114, pls. 11-15. 
2 Professional Paper No. 1, U.S. Geological Survey, 1902, p. 43. 
3 Seventeenth Annual Report, U. S. Geological Survey, Part 1, p. go2. 
