Congratulations to Dr. Kaleb Sellers, Alec Wilken, and their colleagues at the University of Missouri on the publication of their new paper, “Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution”, in the Journal of Anatomy! Using 3D biomechanical modeling of fossils and living crocodylians, the authors show that the orientation of the quadrate bone in the jaw closely matches the orientation of joint reaction forces (JRF) in the sagittal plane. These findings demonstrate that quadrate anatomy evolved in coordination with JRF during suchian evolution, providing a quantitative framework for studying evolutionary changes in jaw joint biomechanics.