Abstract
During the summer of 1904 a paleontological expedition from the University of Chicago, under the direction of Dr. S. W. Williston, made some valuable collections of vertebrate fossils from the Trias of Wyoming along the Popo Agie River. From these collections Dr. Williston described Paleorhinus bransoni and mentioned three other phytosaurian skulls,' all of which were collected by Drs. E. B. Branson and R. L. Moodie. Dr. Williston has very kindly granted the writer the permission to study these phytosaurs and it is from this material that the following notes are drawn. Considerable time and patience have been required of Mr. Paul C. Miller in the preparation of two of these skulls for mounting and the work is not yet completed. In all probability it will be some time before a full description with figures of these specimens is possible and for this reason it seems advisable to give a brief diagnosis of a new form represented by them for the benefit of others that may be studying this group of reptiles.
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