Crassatella sp. is a bivalve mollusc of roughly 12 cm size, a big shell with concentric lines of growth and no further ornamentation. It is found as a fossil in the sedimentary rocks of marine origin in Manresa, in the lowest area of de Sant Pau. It lived during Eocene, in the shallow sea that this area was.
[photo Montserrat Porta and Jordi Badia]