Jaxtasuchus salomoni (Schoch and Sues 2012 - Middle Triassic) is the only armored protorosaur and it also had an antorbital fenestra. Originally it was considered a sister to Doswellia based largely on the armor. Moving Jaxtasuchus to Doswellia adds 14 steps. Moving it to Prolacerta adds 7 steps. Only a few bones are known for Jaxtasuchus and these bones are largely unknown in Doswellia. Part of the postorbital appears to be another bone (in green). A mandibular fenestra was assumed due to the concave angular, but it is likewise concave in Pamelaria. Gastralia were present.
Here Jaxtasuchus is derived from a sister to Boreopricea and is a sister to Pamelaria and Azendohsaurus.