لقد شرحته مع زملائي واستطعنا ان نحدد عمره عن طريق العروق التي تشكل خطوطاً في داخل العظام كما رأينا قد توفي الديناصور " بي - ركس " في عمر 16
And I and my colleagues cut into it, and we were able to determine, by looking at lines of arrested growth, some lines in it, that B-rex had died at the age of 16.