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LITERATURE CITED

Bader, R. s. 1955. Variability and evolutionary rate in
the oreodonts. Evolution 9:119-140.

Buwalda, J. P. and G. E. Lewis. 1955. A new species of
Merychippus. Geol. Soc. Am. Prof. Paper 264-G:147-152.

Dawson, M. R. 1958. Later Tertiary Leporidae of North
America. Vertebrata, Art. 6:1-75.
Jahns, R.H. 1940. Stratigraphy of the easternmost Ventura
basi~, California, with a description of a new lower
Miocene mammalian fauna from the Tick Canyon Formation.
Carn. Inst. Wash. Publ. 514: 145-195.

Kew, W. S. W. 1924. Geology and oil resources of a part of
Los Angeles and Ventura Counties. U. S. Geol. Surv.
Bull. 753.

Maxson, J. H. 1930. A Tertiary mammalian fauna from the
Mint Canyon Formation of Southern California. Carn.
Inst. Wash. Puhl. 404:77-112.

Muehlberger, W.R. 1958. Geology of northern Soledad basin
Los Angeles County, California. Am. Assoc. Pet. Geol.
Bull. 42:1812-1844.

Reeder, W. G. 1960. A new rodent genus (Family Heteromyidae)
from the Tick Canyon Formation of California. So.
Cal. Acad. Sci. Bull. 59:121-132.

Schultz, C. B. and C. H. Falkenbach. 19l~7. The Merychyinae,
a subfamily of oreodonts. Am. Mus. Nat. Hist. Bull.
79:1-105.

Simpson, G. G. 1941. Large Pleistoc~ne felines of North
America. Am. Mus. Novitates No. 1136.

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