Ames crater is a meteorite crater in Major County, Oklahoma, United States. It is about 3km north of Ames, Oklahoma.
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