What is used to estimate the age of a fossil between relative and radiometric dating?

Biostratigraphy is used to estimate the age of a fossil between relative and radiometric dating. Biostratigraphy involves studying the distribution of fossils in rock layers to determine the relative ages of different rock formations. By comparing the types of fossils found in different layers, scientists can estimate the age of a fossil relative to other fossils in the same rock formation. This method is often used in conjunction with radiometric dating to provide a more accurate estimate of the age of a fossil.