Permian rocks in the Ely No. 3 quadrangle include approximately 650 ft. of the uppermost Ely Limestone, about 1000 ft. of Riepetown Sandstone, as much as 4000 ft. of Arcturus Formation, and the basal part of the Kaibab Limestone. Wolfcampian to Leonardian fusulinids occur in the Ely Limestone, Riepetown Sandstone, and Lower Arcturus Limestone but are absent in the Upper Arcturus Formation and Kaibab Limestone. The following corals occur in the fusulinid-bearing rocks: Stereostylus sp., Diphyphyllum connorsensis Easton, Durhamina cordillerensis (Easton), n. gen., Orionastrea hudsoni, n. sp., Ptolemaia ftatateeta McCutcheon & Wilson, Caninia hanseni, n. sp, Heritschioides woodi, n. sp., H. hillae, n. sp., Eastonoides elyensis, n. gen. & n. sp., Lithostrotionella brokawi, n. sp., Sciophyllum mulleri, n. sp., Thysanophyllum princeps Easton, Cladochonus shawi, n. sp., and mccutcheonae, n. sp. The ranges of these corals define 4 zonules which are believed to be of regional extent, and the entire fauna appears to belong to an assemblage characteristic of the Cordilleran geosyncline, the Ural geosyncline, and the Moscow basin.