"Gilmore, Wyoming [...]; Bear River near the mouth of Sulphur Creek, Utah [...]; and at various locality in the ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 10—SW1/4 SW1/4 sec. 36, T. 25 N., B. 119 W., on north side of Smiths Fork, 2 miles northeast of ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 11—NE 1/4 SW 1/4 sec. 29, T. 14 N., R. 119 W., at the 'Fossil Cut,' in southeast of Evanston, Uinta ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 11—NE 1/4 SW 1/4 sec. 29, T. 14 N., R. 119 W., at the 'Fossil Cut,' in southeast of Evanston, Uinta ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 6—SE 1/4 SW 1/4 sec. 7, T. 26 N., B. 118 W., on north side near mouth of third Creek, Lincoln County, ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]
"Locality 11—NE 1/4 SW 1/4 sec. 29, T. 14 N., R. 119 W., at the 'Fossil Cut,' in southeast of Evanston, Uinta ... [details]
"Locality 10—SW1/4 SW1/4 sec. 36, T. 25 N., B. 119 W., on north side of Smiths Fork, 2 miles northeast of ... [details]
Yen (1954) listed the taxon from his localities no. 6 ("SE 1/4 SW 1/4 sec. 7, T. 26 N., B. 118 W., on north side ... [details]
"Locality 11—NE 1/4 SW 1/4 sec. 29, T. 14 N., R. 119 W., at the 'Fossil Cut,' in southeast of Evanston, Uinta ... [details]
"Locality 8—SE1/4 SW1/4 sec. 25, T. 28 N., B. 119 W., Graham coal mine, about 41 miles north of Sage Junction, ... [details]