FIGURE 10 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 10. Ultrastenos sp. "Bullock Creek Taxon", isolated specimens from the Middle Miocene, Bullock Creek Local Fauna, Northern Territory. A, B: NTM P87115-3, posterior cranial fragment. A, right lateral view. B dorsal view. C: NTM P9660, right maxilla in ventral view. D: NTM P895-15, left mandibular ramus in lateral view. Derived character states shared with U. huberi Willis: 1, posterolateral process of the squamosal descends at a steep angle (74⁰); 2, medial, posterior and lateral margins of the supratemporal fenestra rounded and curve gradually into one another; 3, enlarged anterior maxillary foramen; 4, transverse palatal premaxillomaxillary suture lying anterior to the level of the first maxillary alveolus; 5, absence of a posterior lamina of the maxilla separating the anterior tip of the ectopterygoid from the margin of the suborbital fenestra; 6, dermal ornament consisting of regular, subcircular pits separated by walls of even height; 7, posterior extent of the dentary posterior to the posterior margin of the external mandibular fenestra; 8, length of the reduced external mandibular fenestra is less than 25% of the distance between the dentary toothrow and the anterior margin of the mandibular glenoid. Scale bars equal 50 mm.