| Reference | {Deposit:: HENTZ, T.F., 1988, TEXAS BUREAU OF ECONOMIC GEOLOGY, REPORT OF INVESTIGATIONS 170, 55 P. (PETROLIA FORMATION).}{Deposit:: CUMMINS, W.F., 1891, TEXAS GEOLOGICAL SURVEY 2ND ANNUAL REPORT, P. 359-552 (P. 509).}{Deposit:: CUMMINS, W.F., 1893, TEXAS GEOLOGICAL SURVEY, 4TH ANNUAL REPORT, P. 177-238 (P. 232).}{Deposit:: ROMER, A.S., 1974, BREVIORA, NO. 427, HARVARD MUSEUM OF COMPARATIVE ZOOLOGY, 31 P., MAP.}{Deposit:: BARNES, V.E., AND OTHERS, 1967, GEOLOGIC ATLAS OF TEXAS - SHERMAN SHEET: TEXAS BUREAU OF ECONOMIC GEOLOGY, 8 P., SCALE 1:250,000.}{Deposit:: HENTZ, T.F., AND BROWN, L.F., JR., 1987, IN BARNES, V.E., GEOLOGIC ATLAS OF TEXAS - WICHITA FALLS-LAWTON SHEET, 21 P. SCALE 1:250,000.} |