378 MEMOIRS OF THE CARNEGIE MUSEUM. 
Greatest transverse diameter at the heads of the humeri................. 640 
Greatest transverse diameter of the thoracic cavity at 10th rib........... 670 
Height at withers or second dorsal vertebra. ..........-020eeeeercececes 1,860 
Height at last lumbar vertebra.... . ey SE OS DaG coro oO e 1,700 
Height at point of tliutn: oece. ee oe eee ee oe ee eee eee eee 1,520 
Height’ at ischial tuberosity#es 7. occ eee COCR ECC Oe nee 1,060 
Length of. sternum) approximately. +2 re eee hee rasa ee eee eee 780 
enethiofsialtapproxamately aes eee ee tenet eee rreen eee enteric 720 
In concluding this memoir it may be said that the study of the various portions 
of the skeleton outlined in the previous pages shows very clearly the fact that 
Moropus was a highly aberrant Perissodactyl, in some portions of its bony 
framework revealing affinities with the horses, Titanotheres, and Paleotheres, 
but quite distinct from all these and representing a wholly independent line of 
evolutionary development. The opinion has long been held that the Chalicotheres 
were European in their origin, as until recently the oldest remains representing 
them came from that part of the world. The recent determination by Professor 
Osborn of Triplopus amarorum Cope as a Chalicothere from the Washakie Eocene, 
shows us that these animals existed at about as early a date on the soil of the New 
as on that of the Old World. If Prof. Osborn is correct in his view—and apparently 
there is no reason to call in question his judgment—the origin of the family is 
found far back in the early Tertiaries of both the great land masses. Where the 
initial point of development was, is, however, still left in obscurity, though Ho- 
moropus seems to reveal characters which are nearly as primitive as those 
which are revealed by what little we possess of the skeletal remains of the 
earlier European genera. A vast amount of exploration and research must still be 
performed before the evolutionary history of this family can be regarded as having 
been placed upon an approximately sound basis. 
CHAPTER VI. BIBLIOGRAPHY. 
The following list of papers, which are arranged alphabetically according to authors 
under the year of publication, cites the more important contributions which have been 
made to the literature and discussion of the subject with which this Memoir deals. It 
is not necessarily complete, the author not having been able to devote to its compilation 
as much time as he would have liked to bestow; but, though there are no doubt omissions, 
it fairly represents the literature to which the student of the subject requires to have access. 
1825. 
Cuvier, Baron Grorces—‘ Sur une phalange ongueale fossile qui annonce & elle seule 
un Edenté inconnu, probablement du genre des Pangolins, et de taille gigantesque.’’ 
