The jaw grew relatively larger as hominins evolved.
wrong
I apologize for the incorrect response. The correct answer is that skulls in the fossil record tell us about changes in brain size, cranial shape, and dental features, which provide insights into the evolution and diversity of hominin species over time. For example, larger brain size in later hominin species suggests increased cognitive abilities, while changes in cranial shape and dental features can help us understand dietary adaptations and shifts in habitat.
