GILMORE: OSTEOLOGY OF BAPTANODON (MARSH) 81 
So far as I am able to learn there has never been more than a single individual 
found in any one of these concretions. 
Plate VII. shows the outline of the concretion with the bones of specimen No. 
878 in their relative positions as they lay imbedded in the matrix. The skull was 
lying on the right side and turned at a right angle to the vertebral column. 
The snout projected from the concretion as explained above. The cervicals im- 
mediately following the atlas and axis were crushed into the left orbit so completely 
that it was deemed inadvisable to attempt their removal. In the course of prepara- 
tion the skull has been separated from the block containing the other parts of the 
skeleton. ‘Though slightly displaced the anterior 15 vertebre are well preserved. 
The remaining six of the series are only represented by fragments and these are of 
little value for purposes of study. 
The coracoids and scapulee, as will be seen, were in their natural positions and 
give an accurate idea of the manner in which they articulated. The clavicles and 
interclavicle were somewhat removed from the remainder of the girdle, though the 
relation of these bones is very well shown. There are many parts of ribs but none 
are complete. ‘The proximal end of the right humerus is the only limb bone repre- 
sented and this end was only slightly removed from the glenoid socket. 
The bones shown in this diagram will be referred to later in the detailed descrip- 
tion of the several parts. 
This specimen (No. 878) was collected by Dr. J. L. Wortman and party during 
the summer of 1899 on Troublesome Creek, Carbon Co., Wyo. It is the most com- 
plete individual of the three considered in this paper, and is unique as being the 
first to have the clavicles and interclavicle preserved. The parts of this skeleton 
preserved consist of a good skull and lower jaws, with a series of 21 vertebree imme- 
diately posterior to the skull, the complete pectoral girdle, with the proximal ex- 
tremity of the right humerus, numerous parts of ribs and isolated paddle bones. 
The second individual (No. 603)" is from the Baptanodon Beds of Sheep Creek, 
Albany Co., Wyo. It was collected by Mr. O. A. Peterson and party during the 
season of 1900. The parts recovered consist of a nearly complete skull and lower 
jaws, numerous yertebree and pieces of ribs, with a few paddle bones. 
(No. 919) is from the Red Fork of Powder River, Big Horn Co., Wyo., and was 
collected by Mr. W. H. Utterback in 1902. The incomplete pectoral girdle and 
numerous vertebrae are represented. ‘The dorsal and anterior views of the girdle are 
shown in Pl. XII. 
1 Hatcher, J. B., ‘‘ The Carnegie Museum Paleontological Expeditions of 1900,’’ Science, N. S., Vol. XII., No. 
306, pp. 718-720, Noy., 1900. 
