He led the team that excavated "Sue", the largest and most complete specimen of Tyrannosaurus rex found to date, and has published numerous scientific and popular works on dinosaur paleontology.
Ia memimpin tim yang mengangkat "Sue", spesimen terbesar dan terlengkap dari Tyrannosaurus rex sampai saat ini, dan telah menerbitkan sejumlah karya saintifik dan populer tentang paleontologi dinosaurus.