Final answer:
Baby Salam is believed to be from the primitive pre-human species called Sahelanthropus tchadensis, which lived approximately 7 million years ago. This species is claimed to be the last common ancestor of humans and chimpanzees, although it is not considered to be an ancestor of modern humans. Sahelanthropus tchadensis had a small cranial capacity and a large brow ridge, and its posture was not bipedal.
Step-by-step explanation:
The primitive pre-human species that baby Salam is believed to be from is Sahelanthropus tchadensis.
Sahelanthropus tchadensis is a fossil ape that lived approximately 7 MYA and is claimed by some researchers to be the last common ancestor of humans and chimpanzees. However, it is not thought at this time that this species was an ancestor of modern humans.
The cranial capacity of Sahelanthropus tchadensis is a mere 350 cubic centimeters (cc), which is equivalent to a chimpanzee. It also has a very large brow ridge and the location of the foramen magnum suggests that it was not bipedal.