Fig. 1

Elements of Patagonian abelisaurids affected by pathology. A, right tibia of Quilmesaurus curriei MPCA-PV-100 in medial view; B, 5th and 6th caudal vertebrae and 5th haemal arch of Aucasaurus garridoi MCF-PVPH-236, in left lateral view; C and D, middle and posterior caudal vertebrae of Elemgasem nubilus MCF-PVPH-380, in left lateral view. Artwork (silhouette and skeleton) by Alessio Ciaffi