00:01
For the first question concerning the discovery of the footprint, we have the main find made by mary leakey and her team in 1976 and fully excavated by 1978.
00:14
It's a 75 foot that is 24 meters line of a prominent fossil footprint preserved in powdered volcanic ash presumed to have come from an eruption of the nearby sediment volcano.
00:29
Then for the second one concerning the discovery of the a.
00:35
Francis, what was the prevailing idea about the sequence of evolution of brain size? and so for that, the initial feature of the hominine lineage, according to early aspects, was growth of the brain.
00:49
Almost all known causal hominis had already had rather large brains from the mid -1800s through the early 99 years.
01:02
So he says after the finding of early hominine puzzle with a size, braids and by readily adopted morphology, the giant brain hypothesis was devout.
01:15
And for the third one, a shorter and larger pelvis, which allows for the swinging motion required for walking, is another modification of the human skeleton to enable by the when walking upright, longer legs provide a stronger push, combining with agged feet to propel the form forward...