Anserimimus was found in the Mongolian aimag, or province, of Bayankhongor during a joint Soviet-Mongolian expedition to the Gobi Desert, in the late 1970s.
Anserimimus hittades i den mongoliska aimagen, eller provinsen, Bayankhongor under en enhällig sovjet-mongolisk expedition till Gobiöknen under slutet av 1970-talet.