Brazil's giant dinosaurs had bone disease

Giant sauropod dinosaurs in Brazil suffered from a deadly bone disease approximately 80 million years ago. Fossilized bones revealed unhealed lesions consistent with osteomyelitis, suggesting pathogens spread through stagnant water or insect bites. Six individuals from the Cretaceous period likely died with the active infection. The findings from the São José do Rio Preto Formation, an arid region with standing water, indicate conditions favorable for disease transmission among dinosaurs and other fauna.