Fig. 4 in Biomechanical analysis and new trophic hypothesis for Riojasuchus tenuisceps, a bizarre-snouted Late Triassic pseudosuchian from Argentina

Fig. 4. Biomechanical test of external force in the ornithosuchid pseudosuchian Riojasuchus tenuisceps Bonaparte, 1969. Lateral load force (A), tractive load force (B), and twist force (C). External force configuration for each test. The red arrows indicate the direction of the applied forces and the pink cylinder represents the bitten mass (A1–C1). For each test, we present the result of finite element analysis on anterolateral view of the skull (A2–C2), sections of the second and third right teeth of the dentary (A3–C3), and sections of right premaxillary teeth (A4–C4). Abbreviations: mAMP, musculus adductor mandibulae posterior; mAMEs/m/p, musculus adductor mandibulae externus superficialis/medialis/profundus; mPST, musculus pseudotemporalis; mIM, musculus intramandibularis; mPTv/d, musculus pterygoideus ventralis/dorsalis; mDM, musculus depressor mandibulae. The colorimetric scale shows the smooth effective stress distribution in the structure.