Ankylosuchus is an extinct doswelliid archosauromorph reptile from the Late Triassic of Texas. Ankylosuchus is a monotypic genus and the type species is Ankylosuchus chinlegroupensis. It was named in 2013 on the basis of a fossil specimen including fragments of four vertebrae, parts of the skull, and part of a limb bone. These remains come from the Colorado City Formation, which dates to the early Carnian age of the Late Triassic. A. chinlegroupensis is named after the Chinle Group, a stratigraphic group that many Late Triassic formations of the southwestern United States have often been placed under, although a recent revision in stratigraphic nomenclature favors it being called the Dockum Group, which would make the species name a misnomer. Ankylosuchus is similar to other doswelliids in