I reported the presence of fluted mesial and lateral teeth, with four to six flutes (possibly more), in Yuanmouraptor in my paper on the distribution of dental features in theropods (Hendrickx et al., 2019). The authors describing this very interesting metriacanthosaurid, however, omit to report this important dental feature in this taxon. Do they consider that the flutes on the labial side of the...