Early man latest age dating
These fossils, along with the slightly older trails of footprints found at Laetoli, Tanzania, prove that early hominins were upright bipeds when on the ground.However, they also retained many reminders of their tree-dwelling ancestry, especially their rather long arms, short legs, narrow shoulders, and long grasping extremities.The design of her pelvis and feet are suggestive of bipedal locomotion.
They had small (ape-sized) braincases and rather protruding faces.
All these features would have made them agile upright foragers among tree branches, where they presumably sought food by day and sheltered at night even though they moved on two legs while on the ground.
The environments in which these early hominins lived suggest that (1) they were still comfortable in the forest and (2) they were largely active at the forest edges and in the woodlands where the forest graded into more open savanna—a type of habitat that was expanding in their African homeland after about 7 mya as climates became drier and more seasonal.
In contrast, Lucy’s skeleton is 40 percent complete and dates to about 3.2 mya.
Lucy’s pelvis is more humanlike, and the design of her knee joint suggests that she walked upright in a manner similar to that of modern humans.