'Australopithecus has the foramen magnum, the hole in the skull for this, facing down rather than back as it did earlier'
the spinal column
EARLY MAN: Australopithecus has the foramen magnum, the hole in the skull for this, facing down rather than back as it did earlier
Australopithecus has the foramen magnum, the hole in the skull for this, facing down rather than back as it did earlier
Australopithecus has the foramen magnum, the hole in the skull for this, facing down rather than back as it did earlier
EARLY MAN
the spinal column
EARLY MAN