Psilopterus in addition to the different design of the three extensions, among other things, by the comparatively smaller part of the main bone, which was connected to the cheekbone. Likewise, the os quadratojugale showed a more robust structure and was comparatively higher. Since the upper jaw is incomplete, and only the middle section is available, the dimensions of the beak can only be inferred. Using dimensions from other phorusrhacids, it may have been 36 cm long and 17 cm high. The symphysis of the lower jaw, which has also been handed down in fragments, had a much narrower and lower shape than in Brontornis. It was only preserved to a length of 11 cm, but it would have reached a length of around 16 cm. At the rear end it was 6.2 cm wide and 4.7 cm thick, and towards the front it became significantly lower, measuring about 2.8 cm at half length. The underside had a slight curvature, more pronounced than that of Physornis, which had a nearly flat surface. The externally visible foramina were wide and deep. Of the few surviving elements of the body skeleton, a complete tibiotarsus remained, and it was 72 cm long and 10.4 cm wide at the lower end of the joint, resembling that of Phorusrhacos in its long and slender build, although it was larger. At the lower end of the joint it had a bony bridge (pons supratendineus) that was conspicuous for the phorusrhacids. In addition, the lower inner joint roller protruded further forward than that of Galliformes. An almost complete specimen, missing only the inner jointed roller, reached a length of 40 cm and a width at the top of 11 cm. In the middle of the shaft, the side edges drew in significantly further than in Phorusrhacos, which showed a relatively even course of the diaphysis there. With a width of 4.3 cm, the middle joint roll at the bottom was significantly more voluminous than the other two and indicates that Devincenzia's middle toe was also more massive. The first toe of the third (middle) ray measured 12.5 cm in length. It was long and narrow with a width of 5.3 cm and a height of 5.7 cm. The surviving end phalange of the second toe measured around 9 cm, had an oval cross-section, was strongly curved in side view, and was strongly pressed laterally. The width at the