Comments

Morphology and orientation of the acromion process (arrows) of the scapula. Specimens shown in lateral view. A, Mantellisaurus atherfieldensis (IRSNB 1551). B, Parasaurolophus walkeri (ROM 768). C, Tanius sinensis (PMU R241). D, Bactrosaurus johnsoni (AMNH 6553). E, Corythosaurus intermedius (CMN 8704). F, Charonosaurus jiayinensis (CUST JII1398). G, Lambeosaurinae (? Hypacrosaurus stebingeri, TMP 87.79.220; juvenile specimen). H, Maiasaura peeblesorum (ROM 44770). I, Brachylophosaurus canadensis (UCMP 130139). J, Edmontosaurus annectens (SM R4036). Exemplars A through G document state 0 of character 225; exemplars H through J document state 1 of character 225. Specimens A through C document state 0 of character 225; specimens D through G document state 1 of character 226.

Determination annotations

Other Annotations