The Fort Cobb anticline is in T-8-N, R-12-W, Caddo County, Oklahoma. Its history is one of geophysical success and commercial failure. Amerada Petroleum Corporation found seismic evidence of a large closed structure and drilled a 10,000 foot dry hole on top of it. Then The Superior Oil Company shot the area and drilled two more tests. The first Superior test was drilled to 17,800 feet and was the deepest test in the world at the time. The presentation of data includes reproductions of seismic records, cross-sections, and structure maps on three horizons.