Artículos

Publicación especial 4

	Forros
	Preliminares
1	A history of the Caltech collections from the Yepómera area, Chihuahua, Mexico Samuel A. McLeod	1-18
2	Vertebrate fossils from Yepómera, Chihuahua, Mexico―the University of Arizona connection Everett H. Lindsay, Louis L. Jacobs, and Norman D. Tessman	19–32
3	Early Pliocene (latest Hemphillian) horses from the Yepómera Local Fauna, Chihuahua, Mexico Bruce J. MacFadden	33–43
4	Late Tertiary fossil localities in central Mexico, between 19°–23°N Óscar Carranza-Castañeda	45–60
5	Early Pliocene to Early Pleistocene birds from central Mexico David W. Steadman1 and Óscar Carranza-Castañeda	61–71
6	Central American provincialism and the Great American Biotic Interchange Michael O. Woodburne, Alberto L. Cione, and Eduardo P. Tonni	73–101