From the UCD press release: In 2022, a team led by Yale University researchers used traces of biomolecules from fossils to measure metabolism in animals that died millions of years ago. Their data showed, they claimed, that endothermy evolved even before dinosaurs appeared, in the common ancestor of both dinosaurs and the flying reptiles, pterosaurs. Now a new analysis of the data by paleontologists from UC Davis challenges this interpretation. The study is published Sept. 6 in Nature.”
A great collaboration from the whole paleo team at UC Davis–myself, Dr. Motani, Dr. Carlson, and Dr. Vermeij!