Blancan Carnivore Trigonictis 1 
can. (Gustafson 1978:39, 55, not plotted in his fig. 2; specimen identi- 
fied as T. cooki). 
Grand View, Jackass Butte locality, SW of Snake River, Owyhee 
Co., southwestern Idaho, some 17 mi. (27.4 km) NW of Grand View 
(Fig. 1, loc. 2). UO locality 2404. Upper part of the Glenns Ferry 
Formation, age regarded as late Blancan, although Mammuthus has 
recently been found at the locality. A K-Ar date of approximately 1.4 
mybp from a lava above the Glenns Ferry Formation places a min- 
imum limit on the age of the Grand View local fauna. (Shotwell 
1970:7, 82, fig. 8; Neville et al. 1979:519). 
Hagerman, west side of Snake River, Twin Falls Co., south- 
central Idaho (Fig. 1, loc. 3), the type locality of Trigonictis idahoensis 
and T. cookii. Various localities of UM, USGS, Dwight W. Taylor, 
and USNM. (Bjork 1970:4, 22-23, map 1, chart). Trigonictis occurs in 
the lower part of the Glenns Ferry Formation at elevations of approx- 
imately 865 to 990 m in beds dated by K-Ar and magnetic stratigraphy 
from older than 3.75 mybp to older than 3.2 mybp; thus, the Hager- 
man fauna is early Blancan in age. (Neville et al. 1979:521-522, fig. 10). 
Broadwater and Lisco, Morrill and Garden cos., western Nebraska 
(Fig. 1, loc. 4). Exact locality not published. The Broadwater fauna in 
the Broadwater Formation is late Blancan in age. (Schultz et al. 1951: 
table 1; Hibbard 1972b:128, 131-134). 
Sand Draw, Brown Co., central northern Nebraska (Fig. 1, loc. 5). 
Frick Prospecting Localities 277, some 5.5 mi. (8.8 km) N of Ains- 
worth, along Booth Draw, and 278, some 6.5 mi. (10.5 km) ENE of 
Ainsworth, N of Magill Draw. This fauna in the Keim Formation is 
late Blancan in age. (McGrew 1944:53; Skinner 1972:30-34; Hibbard 
1972a: 109, specimen from 278 identified as T. cookii). 
Deer Park, Meade Co., southwestern Kansas (Fig. 1, loc. 6). Uni- 
versity of Kansas Meade County locality 1, some 10 mi. (16. 1 km) SW 
of Meade, Meade County State Park; SE 1/4, sec. 15, T33S, R29W, 
Lake Larrabee 7.5-min. quad., USGS. The Deer Park fauna, occur- 
ring in the Ballard Formation which overlies the Rexroad Formation, 
is late Blancan in age. (Taylor 1966:103; Hibbard 1972b: 128). 
Rexroad locality 3, Meade Co. (Fig. 1, loc. 6; distinct from preced- 
ing locality, but not distinguishable at scale of map). University of 
Kansas Meade County locality 3, some 11 mi. (17.7 km) SW of 
Meade; SW 1/4, sec. 22, T33S, R29W, Lake Larrabee 7.5-min. quad. 
This is the type locality of Trigonictis kansasensis. The Rexroad local 
fauna in the Rexroad Formation is early Blancan in age, perhaps 
somewhat older than the Hagerman local fauna. (Hibbard 1941a:344; 
1941b:273; 1972b:128; Taylor 1966:101). 
Smith Mill Run, 2.5 mi. (4 km) N of center of Goldsboro, Wayne 
