Final answer:
The auricular surface of the ilium is a reliable indicator for estimating age at death. It is one of several skeletal-age markers used in age estimation procedures for adults.
Step-by-step explanation:
The auricular surface of the ilium is a reliable indicator for estimating age at death. It is one of several skeletal-age markers used in age estimation procedures for adults. Other markers include the pubic symphysis, cranial suture closure, epiphyseal fusion, dental development, and eruption. These markers change in predictable ways with age, allowing forensic anthropologists to estimate the age of an individual based on the morphology of these skeletal features.