There’s a new episode of PBS Eons.  It’s about trace fossils and the how we can use them to understand what happened in the past.

To try to solve the puzzle of Lark Quarry, experts have turned to a special subfield of paleontology — paleoichnology, or the study of trace fossils — to reconstruct exactly what happened on that spot, on that day, nearly 100,000 millennia ago.