The skull ofProbelesodon sanjuanensis, sp. nov., from the Late Triassic Ischigualasto Formation of Argentina

Abstract
A new species of Probelesodon, P. sanjuanensis, from the Late Triassic (middle Carnian) Ischigualasto Formation of Argentina is described Diagnostic characters include: six postcanine teeth, highly arched zygomatic arch, well developed squamosal-surangular articulation, very deep dentary with a strong posteroventral angle, and widely separated postorbitals. Probelesodon is also united as a monophyletic taxon. The presence of Probelesodon in the Ischigualasto Formation significantly extends the range of this genus from the Ladinian (Chañares Formation) into the middle Carnian.