Elasticity is common in the soft tissue.
T.Rex Fossils Yield Soft Tissue
Not only is the tissue intact, it’s still transparent and pliable. Tiny interior structures resembling blood vessels, and even cells, are still present in the tissue, according to a university press release.
While examining the
T.rex, Schweitzer and her team noticed tissue fragments that lined the marrow cavity of the animal’s femur. When they dissolved mineral deposits in the tissues, the flexible, stretchy material was left behind.
Schweitzer then duplicated those finding, using at least three other well-preserved dinosaur specimens: one 80-million-year-old hadrosaur and two 65-million-year-old tyrannosaurs. Every specimen displayed preserved vessels, cell-like structures, or flexible material that resembled bone collagen from modern specimens, according to the press release.