846 KANSAS UNIVERSITY SCIENCE BULLETIN. 
appearance as observed in Mr. Daniels’ specimen. They are 
present throughout the dorsal series, apparently missing from 
the lumbar region, and appearing again in the caudal region. 
How much of this is due to accident is hard to determine. 
The structure of the vertebre can be partially observed in 
the specimen. The neural spine was a long, low crest, which 
ran the entire length of the centrum, with a median elevation, 
so that on lateral view the spine would be triangular in form. 
The body of the centrum is expanded laterally into a dia- 
pophysis which projects anteriorly. In the posterior region 
of the dorsal series the mold of the interior of the vertebra 
shows that the notochord was largely persistent and that the 
osseous portion of the vertebra was but a thin shell. 
The structure of the zygapophyses can not be determined. 
That they were dorsal in position is, however, evident from 
several vertebre. The points of these structures project 
laterally. There is a notch between the anterior zygapophysis 
and the roof of the neural canal. 
The restoration of the skeleton of this species, given on 
plate 12, is a summary of existing knowledge of the skeletal 
anatomy of the genus. Much remains to be determined, such 
as the arrangement of the scutes of the ventral armature, the 
anatomy of the pectoral girdle, and the more exact knowledge 
of the feet and vertebre. The restoration gives approximately 
the form of the body and the condition of the skeleton as we 
know it at present. 
