English: A color-coded skull diagram of Trucidocynodon riograndensis (holotype specimen UFRGS PV-1051-T) in left lateral view. Based on diagrams published by Oliveira et al. (2010). Dotted lines indicate missing bone. The mandible size is uncertain due to a discrepancy between listed measurements and diagrams provided in the source. The presence of an internarial process of the premaxilla is based on the referred specimen CAPPA/UFSM 0029, described by Stefanello et al. (2018).