By analyzing the arrangement of vertebrae in the spines of nearly 400 species of tetrapods—a group of animals with four limbs ...

New evidence adds to a 2020 finding that dinosaurs had bone tumors and other conditions seen in modern-day vertebrates. In 2014, researchers discovered a 150-million-year-old ulna of a mamenchisaurid ...

A previously unknown shark once swam around the shores of the UK more than 70 million years ago. The new species, named ...