The well-preserved fossil that was once a dinosaur's butt bone (sacrum) was excavated from South Dakota's Hell Creek ...

They recovered a well-preserved hip bone (sacrum) of an Edmontosaurus dinosaur from the Hell Creek Formation in South Dakota. This formation dates back to the late Cretaceous period, suggesting this ...

Chronic stress leads to elevated stress hormones, which may be linked to bone breakdown. Puerto Rican adults living on the US mainland have higher prevalence of stress than the general population, and ...