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Black Rock

NM: McKinley Co.: 35°06'N, 108°47'W; 1960 m.


Location of the Black Rock site.Age. Rancholabrean (Morgan and Lucas 2005).

General Description. Fossil were recovered during excavations for the Black Rock Dam, about 0.5 km north of Black Rock on the Zuni Reservation (Morgan and Lucas 2005)

Discussion. This is the type locality of Liops zuniensis Gidley 1906 (= Bootherium bombifrons). Morgan and Lucas (2005) report a K/Ar date of 164±35 ka on the basalt underlying the fossiliferous sediments, thus setting a maximum age.


Castor canadensis—American Beaver
Bootherium bombifrons—Woodland Musk Ox
Mammuthus columbi—Columbian Mammoth
Equus sp.—Horse
Bison sp.—Bison

Literature. J. A. Allen 1913; Gidley 1906; Harris 1985a; Hay 1924; McDonald and Ray 1989; Morgan and Lucas 2005.


Last Update: 5 Oct 2008