Humanity
A BRIEF HISTORY OF
Est . 2.4 Million Years Ago
THE EMERGENCE OF THE GENUS HOMO WAS MARKED BY AN INCREASED BRAIN SIZE . H . ERGASTER ( PROBABLY A SUBSPECIES OF H . ERECTUS ) AND ITS BEST-KNOWN SKELETON , THE NARIOKOTOME BOY , IS ABOUT 1.6 MILLION YEARS OLD . H . ERECTUS IS THE FIRST MEMBER OF THE HUMAN FAMILY TO SHOW MODERN BODY SIZE AND PROPORTIONS .