of the late Triassic ichnogenus Atreipus. The trackmaker of Atreipus prints was a quadrupedal ornithischian. The reason for this similarity is a lack of divergence in the foot evolution of the two distinct groups of dinosaurs: ornithischians and saurischians. Wales In January 2021, while walking with her father Richard Wilder, a four-year old Lily Wilder found a 215 to 220-million years old dinosaur footprint at Bendricks Bay in the Vale of Glamorgan, Wales. Experts believe the footprint was most likely left by a dinosaur (grallator) that stood about 75 centimeters (29.5 inches) tall and 2.5 meters (about 8 feet) long and walked on its two hind feet. The scientists called the girl's discovery "the finest impression of a 215 million-year-old dinosaur print found in Britain in a decade". Karl-James Langford, an archaeologist from Amgueddfa Cymru – National Museum Wales, called it as the discovery of "international importance." Cindy Howells, the curator of the museum, described it as “one of the best-preserved examples from anywhere in the UK” and said it “will really aid palaeontologists to get a better idea about how these early dinosaurs walked.” See also List of dinosaur ichnogenera References Further reading Dinosaur trace fossils