43.]
[Footnote 20: From Fossil Wonders of the West. Century Magazine 1904,
vol. lxviii, pp. 680-694. Reprinted by permission.]
[Footnote 21: At this time the Union Pacific Railroad directly passed
the bluffs; in the recent improvement of the grade the main line has
been moved to the south.--H.F.O.]
[Footnote 22: A different interpretation of this contraction is given
upon p. 68.]
REFERENCES.
The published literature on this subject consists chiefly of technical
descriptions and researches scattered through the files of numerous
scientific journals in Europe and America. Only the more important
titles are cited in this list. I have also listed the recently
published text books which give the most authoritative treatment of
the dinosaurs, and two or three popular books dealing with fossil
vertebrates. Students consulting these authorities should remember
that great additions to scientific knowledge of dinosaurs have been
made during the last two decades, and much of the new evidence is as
yet unpublished or undigested. The views and conclusions presented in
this handbook are based upon the study of the American Museum
collections as well as upon the authorities cited below.
ABEL, OTHENIUS, 1912. _Palaeobiologie der Wirbelthiere._
Schweitzer-bart'sche Verlagsbuchh., Stuttgart.
BRANCA U. JANENSCH, 1914. _Wissenschaftliche Ergebnisse der
Tendaguru Expedition._ Archiv. f. Biontologie, iii Bd, i Heft.
BROWN, BARNUM, 1902-1914.
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