The illustrations come from an article published in The Quarterly journal of the Geological Society of London in 1913. You can read the article right here, starting with page 117: https://www.biodiversitylibrary.org/page/38641538#page/173/mode/1up
Bone fragments displayed above were presented by amateur archaeologist Charles Dawson as fossilized remains of a previously unknown early human, and were believed to be a “missing link between ape and man” for over 40 years!
In fact, the bones consisted of a medieval-age human skull, a 500-year-old lower jaw of an orangutan with fossil teeth of a chimpanzee that were modified to have human-like shapes.
More about the Piltdown Man: https://en.wikipedia.org/wiki/Piltdown_Man.
The Zooniverse team would like thank our fantastic volunteer and moderator @yshish for this blog post.