FIGURE 23 in A reinterpretation and taxonomic revision of Ultrastenos willisi Stein, Hand and Archer, 2016, a short-snouted mekosuchine crocodylian from the Oligocene of northern Australia

FIGURE 23. Curvature of the mandible of Ultrastenos huberi compared to Baru iylwenpeny Yates et al. A-C: Ultrastenos huberi, QM F42665, mandibular fragments. A, posterior fragment of the left mandibular ramus. B, right surangular. C, mirror image of the right surangular overlain onto the left mandibular ramus fragment (drawn in red). The left surangular in (A) is filled with white, the other bones are shaded grey. The rectangular bracket in (A) indicates a highly fractured and re-glued zone. Note the offset of the end anterior of the left ramus in (C), which has rotated medially relative to the right surangular (marked with red arrow). D: Baru iylwenpeny, NTM P2787, right mandibular ramus (image reversed). The triangle indicates an inflection point similar to that exhibited in QM F42665. Scale bar equals 50 mm.