 One 'large' and one 'small' taxon can be easily differentiated by the significant change in size observed in the postcranial elements and dentition.The Philippine brown deer from Luzon appears to be closely matched to the 'large' taxon of deer found in the Palawanese fossils, from dental biometric comparisons which are similar between the latter and extant members of the genus "Cervus" or "Rusa", particularly the Philippine brown deer ("C. mariannus") and spotted deer ("C. alfredi").However, the Philippine brown deer shows significant variation across its range, with populations on Mindanao Island being smaller than those of Luzon.