PS The PhysOrg article specifically says that the “scientists have extracted *organically preserved* muscle tissue from an 18 million years old salamander fossil.” Organically preserved muscle tissue is not rock.
The article goes on to state “According to the University College Dublin geologists, the muscle tissue is organically preserved in three dimensions, with circulatory vessels infilled with blood.”
http://www.physorg.com/news176660912.html
So, GGG - I’m curious - how long ago do you think dinosaurs roamed the earth (i.e., t-rex, etc..)?