#Dinosaur

🦕 Scientists have discovered preserved collagen in a dinosaur bone that is 66 million years old! This discovery, published in the journal Analytical Chemistry, calls into question the theory of the complete disappearance of organic matter during fossilization. 🔬 The amino acid hydroxyproline was found in an Edmontosaurus bone from South Dakota. Researchers ruled out contamination using mass spectrometry. 🧬 This changes the understanding of biomaterial preservation and opens the way for studying the biology of extinct species at the molecular level. Perhaps museums are full of "treasures" that we have not yet appreciated!