Fit of continents. Optimized and error-tested on a computer by Sir Edward Bullard, J. E. Everett, and A. C. Smith of the University of Cambridge. Over most of the boundary the average mismatch is no more than a degree. The fit was made along the continental slope (light gray) at the 500-fathom contour line. The regions where land masses, including the shelf, overlap are black; gaps are white. Source: Hurley, 1968.
