Rare Prehistoric Reptile Fossil Found in Southern Switzerland

In a remarkable paleontological breakthrough, researchers from the Ticino natural history museum have unearthed the first-ever Lariosaurus fossil with preserved skin during excavations in Meride, southern Switzerland. The discovery was made in 2023 along the Gaggiolo stream, within the prestigious UNESCO World Heritage site of Monte San Giorgio, an area renowned for its exceptional marine fossils.

The exceptionally preserved specimen measures approximately 60 centimeters in length and has revealed unprecedented details about the creature's anatomy. Research published in the Swiss Journal of Palaeontology highlights the fossil's remarkably developed musculature in the front legs and ribcage, suggesting a swimming style similar to modern sea lions. Of particular interest are the preserved scales, which show striking similarities to those of present-day crocodiles, providing new insights into the evolution of reptilian skin structures.

Dating back approximately 240 million years to the Middle Triassic period, this Lariosaurus specimen represents the first discovery of its kind in Switzerland. The fossil's location within the Monte San Giorgio UNESCO site adds to its significance, as this area continues to yield important insights into marine life from the Triassic period. The preserved skin tissue provides unprecedented opportunities for understanding the external anatomy of these ancient marine reptiles.

The study represents a successful international collaboration, bringing together experts from the Cantonal Museum of Natural History, the University of Insubria in Varese, and the University of Turin. This cross-border cooperation highlights Switzerland's commitment to paleontological research and the importance of Monte San Giorgio as a site of scientific significance. The Cantonal Museum of Natural History continues to play a crucial role in exploring and preserving the rich paleontological heritage of the region.