Fossils of Jaxtasuchus have been found in the Lower Keuper of southern Germany, which dates back to the end of the Middle Triassic. The osteoderms of Jaxtasuchus were originally interpreted as the dermal bones of temnospondyl amphibians and later as the plates of aetosaur reptiles. The only other archosauriforms currently known from the Lower Keuper are Zanclodon laevis, which is known from a jaw fragment and several teeth, and Batrachotomus kupferzellensis, a large pseudosuchian archosaur that is known from several skeletons. Jaxtasuchus is the most abundant archosauriform reptile in the Lower Keuper. Its remains have been uncovered in five fossil localities: Kupferzell, Rielingshausen, Vellberg, Wolpertshausen, and Zwingelhausen. The holotype specimen is a mostly complete skeleton from V