TheropodaTyrannosauridaeFMNH PR 2081

Tyrannosaurus rex

“Sue” · FMNH PR 2081

Tyrannosaurus rex skeletal reconstruction — specimen FMNH PR 2081 (Sue), shown in two views, reconstructed length about 12.3 meters
Scale bar = 1 meter
Taxon
Tyrannosaurus rex Osborn, 1905
Specimen
FMNH PR 2081
Formation
Hell Creek Formation
Reconstructed length
~12.3 m (40 feet)
Femur length
~1.32 m
Completeness
~73%
Collected
1990
View
Left lateral
Basis
Single individual — among the most complete Tyrannosaurus skeletons known
Drawing
© Scott Hartman
Drawn
2003, revised 2019

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Discovered near Faith, South Dakota in 1990 and named for its finder, Susan Hendrickson, FMNH PR 2081 is the most complete Tyrannosaurus rex yet described. It preserves the great majority of the skeleton, including an almost intact skull. After a protracted ownership dispute it was acquired by the Field Museum in 1997, where preparation of the specimen was finished and a major monograph was published. In many ways Sue has become the reference specimen against which other individuals are measured.

The reconstruction is shown here in two views, with the known material below it and a muscle reconstruction further down — the same individual, from the bones preserved, to the restored skeleton, to the musculature draped over it.

The evidence

What FMNH PR 2081 actually preserves

Known-material diagram of Tyrannosaurus rex FMNH PR 2081 (Sue) — elements preserved in the specimen shown in white against a black body silhouette
Known material of FMNH PR 2081: elements preserved in the specimen are shown in white; unpreserved regions are left as black silhouette. Drawn 2003, revised 2026

Muscle reconstruction

Tyrannosaurus rex muscle reconstruction — restored musculature over the skeleton of FMNH PR 2081 (Sue), left lateral and dorsal views
Superficial musculature of Sue (FMNH PR 2081) in dorsal and lateral view. Drawn 2022