The Strange Case of the Buzzsaw Jaws
Season 1 Episode 11 | 3m 54s | Video has closed captioning.
There are many fossils that challenge our ability to form even the most basic idea of how a living thing looked, or lived, or functioned. One of the longest-running of these mysteries involved a 270-million-year-old sea creature called Helicoprion that once swam the seas around the supercontinent of Pangea.
Problems Playing Video? | Closed Captioning