Paleontologists have analyzed cartilage material from Caudipteryx, an oviraptorosaurid dinosaur that lived in what in now China some 125 million years ago (Early Cretaceous epoch) and was part of the famous Jehol Biota. Photograph and line drawing of the Caudipteryx specimen. Image credit: Zheng et al., doi: 10.1038/s42003-021-02627-8. “Geological data has accumulated over the years and shown that fossil preservation in the Jehol Biota was exceptional...
