TheropodaTyrannosauridaeAMNH 5027

Tyrannosaurus rex

AMNH 5027

Tyrannosaurus rex skeletal reconstruction, left lateral view — specimen AMNH 5027, reconstructed length about 11.8 meters
Scale bar = 1 meter
Taxon
Tyrannosaurus rex Osborn, 1905
Specimen
AMNH 5027
Repository
American Museum of Natural History
Formation
Hell Creek Formation
Locality
Montana, USA
Reconstructed length
~11.8 m (39 feet)
Completeness
~48%
Collected
1908
View
Left lateral
Basis
Single individual; source of the classic reference skull
Drawing
© Scott Hartman
Drawn
2004, revised 2024

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Collected by Barnum Brown in Montana in 1908, AMNH 5027 supplied the first essentially complete Tyrannosaurus skull, and the upright American Museum mount built around it defined the popular image of T. rex for most of the twentieth century. Though it preserves no fore or hind limbs, it has an excellent vertebral column, and its skull remains one of the better figured and most influential in the genus.

The known-material diagram below isolates what AMNH 5027 preserves from what is inferred from other specimens.

The evidence

What AMNH 5027 actually preserves

Known-material diagram of Tyrannosaurus rex AMNH 5027 — elements preserved in the specimen shown in white against a black body silhouette
Known material of AMNH 5027: elements preserved in the specimen are shown in white; unpreserved regions are left as black silhouette. Drawn 2004, revised 2023

Other Tyrannosaurus rex specimens

Tyrannosaurus rex skeletal reconstruction, left lateral view — specimen RSM P2523.8 (Scotty), reconstructed length about 12.7 meters
RSM P2523.8
“Scotty”
Tyrannosaurus rex skeletal reconstruction — specimen FMNH PR 2081 (Sue), shown in two views, reconstructed length about 12.3 meters
FMNH PR 2081
“Sue”
Known-material diagram of Tyrannosaurus rex holotype CM 9380 — the few preserved elements shown in white against a black body silhouette
CM 9380
Tyrannosaurus rex skeletal reconstruction, left lateral view — specimen NHMAD 2020.00001 (Stan), reconstructed length about 11.8 meters
NHMAD 2020.00001
“Stan”

← all Tyrannosaurus rex specimens