Rawson, H.D.; Martinelli, A.G.; Rayfield, E.J.; et al.
topology · morphology · event-mechanism · methods
The study μCT-scanned 26 cynodont specimens, including nine Brasilodon and four highlighted Riograndia specimens; reusable models and matrices are deposited separately under DOI 10.5523/bris.2ie8neiry701e23iayx9gdsytv.
In a 26-specimen μCT sample, Riograndia preserves dentary–squamosal contact whereas nine Brasilodon specimens do not, supporting homoplastic acquisition of the contact rather than a single progressive ancestor-to-descendant jaw-joint sequence.
claim:event:riograndia-brasilodon-jaw-joint-homoplasy