I am sure that the pronghorn is extinct in Tamaulipas, but its occurrence in the northern part of the state in relatively recent time (more than 100 years ago) seems possible because the habitat in northern Tamaulipas is suitable for the pronghorn.
LITERATURE CITED
Allen, H.
1862. Descriptions of two new species of Vespertilionidae, and some remarks on the genus Antrozous. Proc. Acad. Nat. Sci. Philadelphia, pp. 246-248, between May 27 and August 1.
1894. A monograph of the bats of North America. Bull. U. S. Nat. Mus., 43:ix + 198, 38 pls., March 14.
Allen, J. A.
1881. List of mammals collected by Dr. Edward Palmer in northeastern Mexico, with field-notes by the collector. Bull. Mus. Comp. Zool., 8:183-189, March.
1891. On a collection of mammals from southern Texas and northeastern Mexico. Bull. Amer. Nat. Hist., 3:219-229, December.
1891. A preliminary study of the North American opossums of the genus Didelphis. Ibid., 14:149-188, 4 pls., June 15.