Click here for the abstract and availability of a secular, peer-reviewed article that summarizes the state of affairs among scientists who grapple with the mounting evidence for what appears to be original, sometimes still-soft biomaterials in fossils including dinosaur blood vessels.

Image: Blood vessel fragments, osteocytes, and extracellular matrix from partly demineralized hadrosaur bones. Cretaceous Research, 99 (2019): 1-13. Adapted for use in accordance with federal copyright (fair use doctrine) law. Usage by ICR does not imply endorsement of copyright holders.