. Bulletin of the Department of Geology. Geology. 338 University of California Publications in Geology [Vol. 7 The peculiarity of specimen 20052 may be accounted for on the assumption that it is a "sport" or "monstrosity" of Mery- codus necatus, a common form in the Mohave region. A large Fig. 4. Merycodus necatus Leidy. Outer side of horn. No. 19832, X Mohave Beds, Mohave Desert, California. number of Merycodus horns have been found in the Mohave Beds, but on no other specimen has there been noted any suggestion of the form seen in no. 20052, so that there was no common te
. Bulletin of the Department of Geology. Geology. 338 University of California Publications in Geology [Vol. 7 The peculiarity of specimen 20052 may be accounted for on the assumption that it is a "sport" or "monstrosity" of Mery- codus necatus, a common form in the Mohave region. A large Fig. 4. Merycodus necatus Leidy. Outer side of horn. No. 19832, X Mohave Beds, Mohave Desert, California. number of Merycodus horns have been found in the Mohave Beds, but on no other specimen has there been noted any suggestion of the form seen in no. 20052, so that there was no common tendency to develop this type of horn. Specimen 20052 represents a type distinct from the other available specimens of the Mohave fauna and, so far as the writer is aware, it is the only known specimen. This may possibly be urged against the view that it is an undescribed form, and not a variation or a sport of a known Merycodus species. In this connection it should be noted that the Mohave fauna is as yet very imperfectly known, and that a considerable number of the most important elements in the fauna have been represented by single fragmentary specimens. For a considerable time the oreodont group was known from the Mohave region only by a fragment of a lower jaw with two imperfect teeth, this being the only oreodont found in an area including all of California and nearly all of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of California, Berkeley. Dept. of Geology. Berkeley : The University Press
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