Ames crater is a meteorite crater in Major County, Oklahoma, United States.
Ames Crater is 10 miles (16 km) in diameter and the age is estimated to be 470 ± 30 million years (Ordovician). The crater is not exposed at the surface. It may be one of several Middle Ordovician meteors that fell roughly simultaneously 469 million years ago, part of a proposed Ordovician meteor event, including the Decorah crater in Iowa, the Slate Islands crater in Lake Superior, and the Rock Elm crater in Wisconsin.
Coordinates: 36°15′N 98°12′W / 36.250°N 98.200°W