Science ❯ Paleontology

Dinosaur fossils

Caudipteryx zoui Fossilized footprints Molecular fossil preservation Aratasaurus fossil specimen Fossilized blood Fossilized soft tissues

Scientists Report Heme Signatures Inside 115‑Million‑Year‑Old Dinosaur Bone

Mineralized red blood cell–like structures co‑occur with hausmannite, a manganese oxide the authors propose helped stabilize blood molecules.

Scientists Report Mineralized Red Blood Cells and Heme in 115‑Million‑Year‑Old Brazilian Dinosaur

Heme and Cell‑Like Structures Reported in 115‑Million‑Year‑Old Dinosaur Bone