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See how the skeleton of a huge 240 million-year-old amphibian is cleaned

Unearthed in southern Poland in 2023, the fossil is the first Mastodonsaurus skeleton to be found in such a well-preserved, nearly complete state, according to Warsaw's Copernicus Science Center, ...
Associated Press

2,000 volunteers join a painstaking effort to restore massive skeleton of prehistoric predator

Volunteers armed with chisels, brushes and protective goggles chip away at rock encasing the bones of a massive prehistoric amphibian in a glass-walled laboratory on the ground floor of Warsaw’s ...