Resumen de Blood from stone.
The article discusses paleontological research findings regarding the persistence of organic substances including blood vessels, bone cells, and fingernail-like matter in dinosaur remains from millions of years ago. The fossil tyrannosaurus rex MOR 555 is noted for its organic content. Traditional paleontological wisdom had held that minerals ultimately replaced organic molecules in fossilized remains. The author provides a personal narrative on her experience in discovering such fossilized organics and substantiating their validity. INSETS: Ancient Organic Remains;Dissecting a Duckbill.
