
In Warsaw, one of the most unusual scientific projects is being developed not only by paleontologists, but also by ordinary citizens.
More than 2,000 volunteers have been involved in restoring the skeleton of a Mastodonsaurus, a giant predatory amphibian that lived around 240 million years ago, long before dinosaurs dominated the Earth.
The fossil was discovered in southern Poland in 2023 by paleontologists Tomasz Sulej and Wojciech Pawlak. The skeleton is nearly six meters long and is considered the largest specimen of Mastodonsaurus found to date.
At the Copernicus Science Center in Warsaw, volunteers are trained to carefully remove the rock covering the bones. They use very small pneumatic tools and ultraviolet lighting, while visitors can watch the work through glass walls.
The process is extremely delicate. One wrong move can damage a piece of bone that has survived for hundreds of millions of years.
Mastodonsaurus was an aquatic predator with a large head and powerful jaws. It lived during the Triassic period, in a world that was recovering from the largest known mass extinction in Earth's history.
This is what makes the fossil particularly valuable. Scientists hope the skeleton will provide new information about how life recovered after the catastrophe and how ecosystems evolved before the rise of the dinosaurs.
When the work is complete, the skeleton is expected to be the largest Mastodonsaurus ever exhibited in a museum. The exhibit is scheduled to open in late 2026.