I30 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 
suggest correlation with the lower yellow beds overlying the 25-foot quartzite 
in Martins Ridge on the east side of the Monitor Range. 
II. FORMATIONS IN UTAH 
Pogonip equivalents of post-Canadian age occur in Utah where sections and 
brachiopods have been described. 
IBEX AREA, UTAH 
Hintze (1951) has split the Pogonip of western Utah, Millard County, into 
six formations in ascending order: House limestone, Fillmore limestone, Wah- 
wah limestone, Juab limestone, Kanosh shale, and Lehman formation. The for- 
mations below the Wahwah limestone have few brachiopods, but the top of the 
formation is characterized by a bed 1 foot thick abounding in Hesperonomiella 
minor (Walcott). The Juab limestone contains Orthambonites subalatus (UI- 
rich and Cooper). The Kanosh shale is characterized by Orthambonites michaelis 
(Clark) and Anomalorthis utahensis Ulrich and Cooper. Kirkina millardensis 
Salmon is reported from the top of the Kanosh shale and the overlying Lehman 
formation. The Kanosh shale thus seems to be the equivalent of the Oil Creek 
of Oklahoma and the Anomalorthis zone in Neveda. These names do not appear 
on the chart. 
NORTHEASTERN UTAH 
Swan Peak quartzite.—This formation contains the brachiopods Orthambo- 
nites subalatus (Ulrich and Cooper), O. michaelis (Clark), O. swanensis (UI- 
rich and Cooper), Anomalorthis utahensis Ulrich and Cooper, A. lonensis (Wal- 
cott), Syntrophopsis utahensis Ulrich and Cooper, and Westonia ? elongata 
Walcott. The presence of Anomalorthis suggests correlation with the Oil Creek 
of Oklahoma and the Anomalorthis zone in Nevada. 
