<p class="ingestion featured-caption">Tegan and Claire Jones were looking for fossils on the beach when they found dinosaur footprints.Claire Jones</p><ul class="summary-list"><li>A 10-year-old found 220-million-year-old <a target="_blank" class href="https://www.businessinsider.com/record-breaking-dinosaur-footprint-meat-eating-uk-megalosaurus-2023-2">dinosaur tracks</a> in Wales while fossil hunting.</li><li>Tegan Jones and her mother found the tracks, which hadn't been seen in over 140 years.</li></ul><p>You've probably left many footprints in mud and sand but the chances they still exist are pretty slim. The same is <a target="_blank" class href="https://www.businessinsider.com/dinosaur-footprints-damaged-boardwalk-construction-2022-4">true for dinosaurs</a>, which is why a 10-year-old's discovery of a set of 220-million-year-old tracks is pretty remarkable.</p><p>Tegan Jones was looking for fossils last year with her mother, Claire Jones, when she spotted the tracks.</p><p>Others have <a target="_blank" class href="https://www.businessinsider.com/girls-finds-dinosaur-print-beach-dates-back-220-million-years-2021-1">found dinosaur footprints</a> in this area of Wales. So, the mother-daughter duo thought the tracks were already well-known when they stumbled upon them.</p><p>It wasn't until they got home and compared their photos to others' online that they realized the tracks were different.</p><p>"It was amazing to think that we had discovered something from 220 million years ago," Claire Jones told Business Insider via email.</p>