How are dinosaur tissues preserved in deep time?
by Tracey Peake, North Carolina State University, PhysOrg, May 1, 2023
[phys.org]

The open access paper is:

Anderson, L.A., 2023. A chemical framework for
the preservation of fossil vertebrate cells and soft
tissues. Earth-Science Reviews, no. 104367.
[www.sciencedirect.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)