Cranial features refer to the various characteristics and structures of the skull, which protects the brain and supports the face. These features include the shape and size of the skull, the arrangement of the facial bones, and the presence of specific landmarks such as the brow ridge and nasal cavity. Different species exhibit unique cranial features that can indicate evolutionary adaptations. For example, the skull of Homo sapiens has a rounded shape and a prominent forehead, while the skull of Neanderthals shows a more elongated shape with a pronounced brow ridge. These differences help scientists understand human evolution and diversity.