Dinosaur bones contain modern microbes:
While buried, dinosaur bones attract diverse, living microbial communities that can complicate attempts to identify ancient organic material.
Study: Saitta et al. 2019. eLife
Media: The Atlantic, The Scientist, Chemical & Engineering News, The Conversation (by study coauthor), briefly mentioned in I Know Dino as well as in response to other studies in The Conversation and twice in Gizmodo.
My summary: The Science Breaker