Traditional animal skin leathers? Those are dinosaurs. Enter "leather" made from the lab-grown skin of a T-Rex, which a group ...

You might soon carry a wallet made from dinosaur skin. No, not fossilized—actual leather engineered from T. rex DNA in a lab.

But an analysis of more than 80 fossilized dinosaur and Mesozoic bird skin samples published in Biology Letters yesterday (June 3) indicates that this is likely not the case. “What we found from this ...