The object found is one half of a bivalve mold, used to produce unstruck metal discs (known as cospeles) that would later be hammered into coins. The mold measured 11 cm in height, 13.7 cm in ...

Detailed images of the stone mould used for blank coin production. It corresponds to the flat valve of a bivalve mould. Credit: M.I. Moreno-Padilla et al. A One-of-a-Kind Mold. The discovered object ...

Focusing on the past to protect the future. To investigate, the researchers examined nearly 2,000 genera of bivalves from before and after the Cretaceous mass extinction, as well as today.

The object found is one half of a bivalve mold, used to produce unstruck metal discs (known as cospeles) that would later be hammered into coins. The mold measured 11 cm in height, 13.7 cm in ...