Torreites sanchezi, an extinct species of rudist clam that lived during the Cretaceous period, some 70 million years ago, grew fast, laying down daily growth rings. In a new study, a team of researchers from the Vrije Universiteit Brussel and Ghent University used lasers to sample minute slices of Torreites sanchezi’s shell and count the growth rings. The rings allowed the scientists to determine the number of days in a year and more accurately...
