Fig. 1

3D models of skulls in right transparent view of six Jeholosaurus specimens. (A) CUGW VH132 (early juvenile); (B) IVPP V15719 (early juvenile); (C) IVPP V12530 (late juvenile); (D) IVPP V15718 (late juvenile); (E) IVPP V12529 (late juvenile); (F) IVPP V15717 (subadult). CT reconstructions are color coded as follows: functional premaxillary teeth, violet; functional maxillary teeth, yellow; functional dentary teeth, lavender; replacement teeth, cyan; remnants of resorbed functional teeth, red. Scale bar equals 20Â mm