
Ireland's 330-Million-Year-Old Shark Remains Rewrite a Lost Prehistoric Ocean
Researchers in Ireland’s Burren and Donegal uncovered Carboniferous-era shark fossils—Psephodus magnus teeth and an Oracanthus milleri fin spine—marking the first fossil fish records from these sites and offering new insights into ancient marine life and shark evolution, with citizen scientists helping the discovery and the findings shared in an open-access preprint.













