1The appendix is a vestigial organ that no longer serves a vital purpose in the human digestive system.
2Some scientists argue that the wisdom teeth are vestigial, as they are no longer necessary for grinding food.
3The vestigial remains of the ancient city were discovered by archaeologists in the desert.
4The company's vestigial business model was no longer competitive in the modern market.
5Biologists have identified several vestigial genes in the human genome that are no longer expressed or have lost their function over time.