Talk:Tyrannosaurus/@comment-2A02:C7D:6062:FC00:957:1156:D63E:2CF5-20181011190428/@comment-33371592-20181012192837

As Tyrannosaurus rex specimens have been found from Saskatchewan to New Mexico, differences between individuals may be indicative of geographic variation rather than sexual dimorphism. The differences could also be age-related, with 'robust' individuals being older animals