Dinosaur with two heads? Rare fossil discovery stuns scientists

A 120-million-year-old Hyphalosaurus fossil, unearthed in China, reveals a rare case of axial bifurcation, resulting in a two-headed reptile. This remarkable find, published in Biology Letters, represents the oldest known instance of this congenital defect in the vertebrate fossil record. The discovery provides valuable insights into developmental anomalies and evolutionary challenges faced by ancient species.