The appendix is an example of a vestigial organ that could be found in transitional fossils. The appendix is a small, pouch-like organ located at the beginning of the large intestine. In humans, the appendix is thought to be a vestigial organ that may have had a digestive function in our evolutionary ancestors but is no longer necessary for survival in modern humans. Transitional fossils may show evidence of changes in the size or shape of the appendix over time as it became less important for survival.
