250 C. Stock — Cenozoic Mammalian Remains 



Aet. X^n^II. — Later Cenozoic Mammalian Remains from 

 the Meadow Valley Region, Southeastern Nevada; by 

 Chester Stock. 



Contents. 

 Introduction. 

 Previous knowledge. 

 Occurrence. 



Comparison of faunas from the Meadow Valley Region. 

 Description of Vertebrate Eemains. 

 Panaca beds, Meadow Valley, Nevada. 



Pliohippus?, sp. 



Ehinocerotid, possibly Teleoceras, sp. 



Pliauchenia?, sp. 

 Muddy Valley beds, Muddy Valley, Nevada. 



Merychippus ?, sp. 



Alticamelus? or Procamelus?, sp. 

 Descriptive list of collecting localities. 

 Oonclusions. 



Introduction. 



In the progress of investigations relating to problems 

 of correlation of western Tertiary deposits, conducted 

 nnder the leadership of Professor John C. Merriam at 

 the University of California, it has become evident that 

 an extensive territory of later Cenozoic beds in the 

 Meadow Valley region of southeastern Nevada, mapped 

 by Spurr^ as Pliocene, has remained for a number of 

 years a field from which palseontological materials indi- 

 cative of Tertiary mammalian faunas were unknown. 



With the special purpose of examining the deposits 

 for vertebrate remains, the writer accompanied by Mr. 

 R. J. Russell visited Meadow Valley during the field 

 season of 1919, at the request of Professor Merriam and 

 in the interest of the Department of Palaeontology, 

 University of California. While fossil collecting did 

 not yield the results that had been anticipated, sufficient 

 materials were encountered in beds exposed near the 

 village of Panaca in Meadow Valley, and again in Muddy 

 Valley between the villages of Overton and Logan, to give 

 some information as to age and relationship of these 

 deposits. 



Information relating to the Meadow Valley region, 

 although dependent upon an examination of a compar- 



^ Spurr, J. E., Descriptive geology of Nevada south of the fortieth paral- 

 lel and adjacent portions of California, U. S. Geol. Surv. Bull. 208, 1903. 



