How can scientist how whether toumai is a biped or not?

Scientists can determine whether Toumaï, a hominid fossil discovered in Chad, was bipedal by analyzing its skeletal features, particularly the structure of the pelvis and the angle of the femur. The position of the foramen magnum, where the skull connects to the spine, can also indicate upright walking. Additionally, footprints or other fossilized evidence in the surrounding area can provide further insights into its locomotion. By comparing these traits with modern humans and other primates, researchers can infer its mode of movement.