Here are six of many ways of comparing skull fossils. Supra orbital height, shape of braincase, forehead size, face size and shape, canine teeth shape and size, as well as the foramen magnum. “We continue to learn from Fossils. Each new fossil contains additional clues that increase our understanding” (Horner, J. (Ed.). (2004). Physical traits are a way to determine what species it is. After determining the species, you can also compare multiple fossils from different time periods of the same species to receive a better understanding of how they have evolved to survive due to natural selection. Evidence from the fossil records help explain the unity and diversity of life by comparing and contrasting the differences of fossils. Evidence helps us infer about things in the past that help us to determine how species have evolved as well as to show how closely related species may be to one and another by comparing and contrasting