PETERSON: A REVISION OF THE ENTELODONTIDA (3 
I assured Mr. Cook that I would be back the following spring to systematically 
take up the work in the hills, which decision he assured me was in accord with 
his wishes. 
Early in the spring of 1905 the writer accompanied by Mr. T. F. Olcott resumed 
work in quarry No. 1 (see fig. 25). Mr. Cook impelled by curiosity had already 
started in the previous fall to excavate in quarry No. 1 (see Plan of Quarry, PI. 
LIV, Cook Excavation), but after earnest entreaty by letter to await the coming of 
more expert help desisted from his work. Many piles of fragments were found on 
the edge of the opening which had been dug out by Mr. Cook. These fragments 
were carefully gathered and packed before the commencement of systematic excava- 
tions. The work being fairly started, Mr. Olcott was left in charge of the quarry, 
while I returned to Pittsburgh in order to attend to other duties in the museum. 
Thus was started one of the most important fossil quarries ever found in North 
America. 
When I again returned to the field later in the season, Mr. Olcott was still 
engaged in the same hill, while Professor E. H. Barbour, of the Nebraska State Uni- 
versity, had been invited by Mr. Cook to open a quarry in the adjoining hill, after- 
wards named by Professor Barbour “The University Hill.” Much material had 
been uncovered in quarry No. 1 among which the most important were bones of 
Moropus, many individuals of Diceratheriwm and an unusually well preserved, and 
pretty nearly articulated skeleton of a gigantic Entelodont (see Pl. LIV, Plan of 
Quarry, Blocks Nos. 61, 86 in Sect. 4). The discovery of the latter was a surprise, 
nothing having hitherto been found representing this family in the lower Miocene 
of Nebraska. One hind limb and most of the parts of. the skeleton anterior to the 
pelvis were recovered. The pelvis, the lumbar vertebree, and perhaps also one hind 
limb” were unfortunately dug out by Mr. Cook and those assisting him and only 
portions of four vertebree and the pubic symphysis of the pelvis were recovered 
from the fragments left on the edge of the quarry. 
The skull was almost in contact with the atlas. The cervical and dorsal verte- 
bree were found in a successive series back of the skull, the dorsals being articulated 
by their zygapophyses (see Plate LIV, Sect. 4, Blocks 61, 72, 86). The greater 
humber of the ribs and the sternum were found in close proximity in their relative 
positions, while one hind limb was found a short distance from the main portion of 
the skeleton. The fore feet were scattered. There is, then, no doubt that the fol- 
lowing description of the skeleton is that of one individual. 
In addition to this skeleton there. were found, in Sections 16-21 in quarry No. 
* The head of a femur, which may or may not pertain to this specimen, was found on the dump. 
