Histologic analysis of Tyrannosaurus rex bones showed LACM 28471 had aged only 2 years when it died, while Sue was 28 years old, an age which may have been close to the maximum for the species.
Analisis histologi terhadap tulang-tulang Tyrannosaurus rex menunjukkan LACM 28471 hanya berusia 2 tahun saat mati, sementara Sue menjemput ajal saat berumur 28 tahun, yang mungkin mendekati rentang kehidupan maksimal Tiranosaurus.