nytimes August 23, 2021 11:01am T. Rex Was Fearsome but May Have Been a Picky Eater #dinosaurs #paleontology #research #jawbodypart #fossils #historicalbiologyjournal #japan #montana #tyrannasaurusrex #science #news T. Rex Was Fearsome but May Have Been a Picky Eater The jaw of the Tyrannosaurus Rex had sensitive nerves that may have allowed it to differentiate between parts of its prey, a new study found.