This is rather cool. From paleoanthropologist Professor John Hawks:
This naturally raises a broader question: How many other people have installed travertine with hominin fossils inside? …
Travertine also commonly includes fossils. Many are fossil inclusions of algae, plants, and small animals—especially molluscs and crustaceans—that live within the spring water. Much larger animals may be found and humans are no exceptions: Several well-known hominin fossil discoveries are from travertine deposits. Most of these discoveries have happened because of quarrying of the travertine deposits for use in construction.
Pictures at the link. I do not have any travertine floors, otherwise I’d not be writing this, but crouched on the floor looking for fossils.
