L04 MEMOIRS OF THE CARNEGIE MUSEUM. 
1898. 
Trovunssart, E. L.—* Catalogus Mammalium tam viventium quam Fossilium.” Vol. II, 
pp. 696-698. Under the Ungulata as the Fourth Family are given the Chalicotheriide. 
Five genera are recognized: Schizotherium Gaudry, Pernatherium Gervais, Macro- 
therium Lartet, Chalicotherium Kaup, and Moropus Marsh. 
Limognitherium Filhol is suppressed as a synonym of Schizotherium Gaudry. Ani- 
sodon Lartet is sunk as a synonym, in part of Macrotherium, in part of Chalicotherium; 
Nestorithertum Kaup is sunk as a synonym of Chalicotherium; Ancylotherium Gaudry 
is suppressed as being in part synonymous with Schizotherium Gaudry, and in part with 
Chalicotherium Kaup. Colodus Wagner is treated as in part being synonymous with 
Chalicothervum Kaup. 
1899. 
Martruew, W. D.—“ A Provisional Classification of the Fresh-water Tertiary of the West.’’ 
Bulletin American Museum Natural History, Vol. XII, pp. 19-75. 
On p. 58 the author lists Chalicothervum bilobatum Cope from the White River Beds 
under the Ancylopoda; on p. 63 Moropus distans and senex Marsh are listed from the 
John Day Beds under the Perissodactyla, as ‘‘ ?Chalicotheriide (aut Edentata) ’’; and 
on p. 72 Moropus elatus Marsh is cited as coming from the Loup Fork Beds, and in 
the same manner is referred with doubt to the Chalicotherude or the Edentata. 
1904. 
Weser, Max— Die Sdugethiere, Einfiihrung in die Anatomie und Systematik der Recenten 
und Fossilen Mammalia.” 
On pp. 694-696 the Ancylopoda are briefly characterized as an extinct order, and 
the author apparently is inclined to view with favor the view of Ameghino that the 
_Homalodontheriide (sic) are to be included in the Ancylopoda. The time-honored 
figures of the foot of Macrotherium by Gervais are given, with the figure of the foot of 
Homalodonthervum (sic) after Ameghino. 
1906. : 
Prtrerson, O. A.‘ The Miocene Beds of Western Nebraska and Eastern Wyoming and Their 
Vertebrate Fauna.” Annals of the Carnegie Museum, Vol. V, 1906, pp. 60-63. 
The genus Moropus is here placed on a firm foundation by comparing specimens 
recently acquired by the Carnegie Museum with the types of Moropus. 
1907. 
Prrrerson, O. A.—“ Preliminary Notes On Some American Chalicotheres.” American 
Naturalist, Vol. XLI, December, 1907, pp. 733-752, figs. 1-26. 
In this paper, on page 735, for the first time the type material of Moropus distans, 
senex, and elatus is illustrated. Specimens from the Agate Spring Fossil Quarries, 
