Which type of fossil evidence determine the evolutionary relationship between two hominid species?

skull size of each species

Over time, it is the size of the skull  particulary that of the jaw bones, that can help determine the evolutionary relationship of two hominid species. It was believed that the jaws of hominids change as time passes by because the size of the brains changes too.

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid