A pregnant Tyrannosaurus rex may reveal the secrets to identifying gender differences in meat-eating dinosaurs.
http://naturalsciences.org/calendar/wp-content/uploads/2016/03/preg_T.rex_cleaned_up_v_full-2.jpg
A pregnant Tyrannosaurus rex may reveal the secrets to identifying gender differences in meat-eating dinosaurs.
http://naturalsciences.org/calendar/wp-content/uploads/2016/03/preg_T.rex_cleaned_up_v_full-2.jpg
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