Which was briefly an anomaly in the fossil record of humans?

The Piltdown Man

Explanation:

One of the biggest hoaxes in science, the Piltdown Man was a combination of forged fossils, initially regarded as the "missing link" between ape and humans.In 1912, British archaeologists Arthur Smith Woodward and Charles Dawson reported the discovery of a human fossil at Piltdown that could potentially be the missing link in human evolution.Initially hailed as a remarkable discovery, the fossils were later proved to be only about 50,000 years old. Kenneth Oakley, a geopaleontologist at the Natural History Museum, proved that the jaw and mandible of the fossilized skull belonged to an orangutan and the parts of the cranium belonged to a modern human.