FOSSIL FEATHERS AND SOME HERETOFORE 
UNDESCRIBED FOSSIL BIRDS 
R. W. SHUFELDT, M.D. 
Washington, D.C. 
In addition to the photographs of the slabs of Archaeopteryx 
from the British Museum (A. lithographica) and from the Berlin 
Museum (A. siemensii), the material described in the present 
paper is based upon specimens sent me for the purpose by Mr. 
Theo. D. A. Cockerell, of the University of Colorado, Boulder, 
Colo.; by Professor Charles Schuchert, and Mr. C. W. Gilmore. 
The valuable lot from Professor Schuchert belongs to the Geo- 
logical Collections of the Peabody Museum of Natural History of 
Yale University, and those loaned me by Mr. Gilmore belong to 
the Division of Paleontology of the United States National Museum, 
in which institution he has charge of the fossil birds and reptiles. 
The most important part of this material was photographed 
by me, and the reproductions of those photographs appear through- 
out this article. All the figures in the illustrations are repro- 
duced from photographs made by the author direct from the 
specimens figured. 
With respect to the photographs of the two species of Archaeop- 
teryx, the one of the British Museum slab was made for me, many 
years ago, for an illustration to a magazine article I was preparing 
at the time, and which has long since been published; the other 
I obtained by copying it from the plate in Vogt’s article by means 
of the camera, it being here reproduced as Fig. 2.? 
tTR. W. Shufeldt, ‘“‘Feathered Forms of Other Days,” Century Magazine 
(New York and London, January, 1886), XXXI, No. 3, pp. 352-65. It is Fig. 1 
of this article on p. 353 (Fig. 1, below). 
2 Carl Vogt (professor in the University of Geneva), ‘‘ Archaeopteryx macrura, 
an Intermediate Form between Birds and Reptiles,’ The Ibis (a quarterly journal 
of ornithology) (London, 1880), IV, 434-56. This is Plate XIII of the article, and 
is a reproduction of the photograph made direct from the original slab. Professor 
Vogt’s article contains a great mass of valuable information in regard to Archaeop- 
teryx, and is, indeed, a veritable classic on the subject, although his views are disputed 
by some paleontologists, the writer among the number. 
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