Map functions can be and often are defined in terms of a fold such as foldr, which means one can do a map-fold fusion: foldr f z. map g is equivalent to foldr (f. g) z.
The Medusa Field is a deepwater development located in Mississippi Canyon Blocks 538 and 582, 100 miles (161 kilometers) south of New Orleans, La. The field is located in 2,200 feet of water (671 meters) and can produce up to 40,000 bopd. Murphy Oil Corp operates the field, holding a 60% working interest.
Medusa first appeared in Fantastic Four #36 (1965), and was created by Stan Lee and Jack Kirby. Medusa appears in the new series FF by Matt Fraction and Mike Allred, which debuted in November 2012.