Three-hundred-and-thirty-million-year-old teeth and a fin spine from fossil sharks have been found in the Burren, County Clare, and in Donegal. The fossils were identified by Clare County Council and Burren and Cliffs of Moher UNESCO Global Geopark Geologist Dr Eamon Doyle, and his colleagues Dr Wayne Itano of University of Boulder, Colorado, and Dr Aodhán Ó Gogáin of National Museum of Irel... [2495 chars]