204 MEMOIRS OF THE CARNEGIE MUSEUM. 
Location of Types: Musée National d’Histoire Naturelle, Paris. (Casts in the 
Carnegie Museum.) 
Geological Horizon: Phosphorites of Querey (Lower Oligocene). 
2 wate 
GENERIC CHARACTERS: Dentition I5, Ca, Ps, Me. upper molars longer than 
broad; trapezium present; facet for vestigial pollex; Me. II and IV com- 
paratively long when compared with Moropus; Me. V present; Mt. III and 
IV subequal in length. 
Genus PERNATHERIUM Gervais. 
Gervais, Journal de Zodlogie, Vol. V, No. 6, pp. 424-432 (1876). 
Type: P. rugosum Gervais, l. c. 
Type Specimens: Os calcaneum and fragments of metapodials described by 
Gervais. 
Location of Types: Musée National d’Histoire Naturelle, Paris. 
Geological Horizon: Marls of Saint-Ouen, near Pare de Monceaux (Kocene). 
GENERIC CHARACTERS: Dentition unknown; the distal articulation of one of the 
two fragmentary metapodials shows rather conclusively that Gervais was 
not mistaken in referring the animal to the Chalicotheriide. The material 
is, however, very insufficient, and quite inadequate to base upon it a correct 
diagnosis of the genus. The proximal end of a metapodial reveals three 
articulating surfaces separated from each other by sulci, rising externally 
from the upper end of the shaft, one of which surfaces is apparently in part 
supported upon a columnar process, a feature which is not revealed in any 
other genus of the family, so far as is now known. The os caleaneum also 
shows marked differences from the corresponding bone in other genera in the 
shape of the articulating surfaces. Unfortunately until the present time no 
material other than the types has been discovered. We place this genus in 
the subfamily Schizothertine simply on account of its geological horizon. 
It may well represent, however, a totally different group of primitive ungu- 
lates, related to the Chalicotheroidea. Until more and better material is 
discovered its true affinities must remain more or less problematical. 
Genus Eomoropus Osborn. 
Osborn, Bulletin American Museum of Natural History, Vol. XXXII, p. 264, 
(1918). 
Type: Triplopus amarorum Cope, Proceedings American Philosophical Society, 
Vol. XIX, p. 389 (1881); cf. Vertebrata of the Tertiary Formations of the 
West, I, pp. 660, 687, Pl. LV, figs. 6-9, Pl. LVIII, fig. 2 (1885). 
