Dinosaur amino acids:
Titanosaur eggshell contains a few of the most thermally stable amino acids, which are completely freed from their protein sequences and further degraded. These results are likely the most robust evidence of dinosaur protein-derived breakdown products.
Preprint: bioRxiv
Fossil Pigments:
Pigments like melanin, carotenoids, and porphyrins can preserve deep in the fossil record and allow for the reconstruction of color patterns in organisms, such as dinosaurs.
Study: Biological Reviews
Video summary: HKU Faculty of Science
