Dinosaurs

Mesozoic

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Dinosaurs

Dinosaurs · yesterday

Impossible? This Dinosaur Bone Still Contains Original Protein

The sacrum of an *Edmontosaurus* still contains remnants of the animal’s own protein. More precisely: fragments of collagen, the structural protein that keeps bones strong and flexible. A team led by Lucien Tuinstra found three independent lines of evidence for it. The fossil comes from the Late Cretaceous of South Dakota — and is fuelling a dispute that has occupied researchers for decades.

CheckedSource: DOI: 10.1021/acs.analchem.4c03115

Dinosaurs

Dinosaurs · 3 days ago

Long-Necked Dinosaurs: After the Crash Came Another Boom!

First their diversity plunged. Then it climbed again. Long-necked dinosaurs from the group Diplodocoidea tell a striking story across the Jurassic–Cretaceous transition. A new study places their later diversity peak in the Aptian of the Early Cretaceous. In sampling-adjusted estimates, it even exceeds the highest Late Jurassic values. But different long-necked dinosaurs are behind this second boom.

CheckedSource: DOI: 10.3897/fr.29.189225

Dinosaurs

Dinosaurs · 4 days ago

Medusaceratops: Pus in its bone – and it lived on!

Medusaceratops had pus draining from a bone in its tail. An injury had badly damaged the horned dinosaur, and infection ate into the vertebra. Yet its body kept responding, building a massive sheath of new bone. The Montana fossil shows that the dinosaur lived for a long time after the injury. The evidence is strikingly clear.

CheckedSource: A case of an expansile lesion in a caudal vertebra of Medusaceratops lokii

Dinosaurs

Dinosaurs · 4 Sept 2026

Cretaceous Birds in Mexico: Why Tracks Are Not Species

Bones and bird-like tracks document a recurring presence in Late Cretaceous Mexico, but footprints alone cannot securely identify biological species.

CheckedSource: Review of Cretaceous Avian Dinosaurs from Mexico: Current Knowledge and Future Perspectives