known from two specimens discovered in the Manda Beds of Tanzania and originally described by von Huene (1938/1939). It has recently been argued to be a second valid species of Prestosuchus, Prestosuchus nyassicus, by Desojo et al. (2020). Description Like its relatives, Prestosuchus had a deep skull and serrated teeth. While it resembled a dinosaur in having a large body and upright posture, it was actually a pseudosuchian, meaning that it was an archosaur more closely related to modern crocodilians than to dinosaurs. Prestosuchus lived during the Middle Triassic in what is now Brazil. Initially it was estimated to be around 5 meters (17 feet) but a specimen discovered in 2010 suggest that Prestosuchus reached lengths of nearly 7 meters (23 feet) making it one of the largest Triassic pseudosuchians alongside Saurosuchus and Fasolasuchus. Prestosuchus probably walked on four legs like crocodilians, but unlike crocodilians, it had an upright semi-erect stance with limb bones placed below the hips. Skull The premaxilla has a tall and boxy main body with four teeth. The premaxilla also has several slender branches: a bent anterodorsal process (front upper branch), a long maxillary process (outer rear branch), and well as a pronounced palatal process (inner rear branch). These define a triangular naris (nostril hole) similar to Saurosuchus but very distinct from that of Batrachotomus. The maxilla is deep and roughly textured, with a low, triangular antorbital fenestra and 11-13 large teeth. Many specimens seemingly possessed a thin convex ridge ("roman nose") running along the midline of the elongated and narrow nasals, similar to Luperosuchus and Batrachotomus. However, some paleontologists have argued that this appearance is a result of distortion. Additional low, rough lateral ridges (similar to those of Rauisuchus) run along the upper edge of the snout from the nasal to the lacrimal and prefrontal. A palpebral bone is present above the orbit in the largest specimens but is absent in other skulls. Unlike Postosuchus and Luperosuchus, which have their palpebral forming the entire upper edge of their orbit, Prestosuchus has additional bones forming part of the upper edge; the postfrontal always participates in the orbit, and smaller specimens without a palpebral have the frontal contribute as well. The orbit has an overall "keyhole" shape like many other loricatans, with its upper half having a smoother and wider border and its lower half being narrow and pointed. This shape is due to a slightly forward