Table 2 Estimated size class and body mass for theropods inhabiting the Late Jurassic through Late Cretaceous in western North America.

From: Neovenatorid theropods are apex predators in the Late Cretaceous of North America

Estimated body mass range (kg)

Taxon

Specimen number

Mass estimate (kg)

Femur length (mm)

500–1,499

Juratyrant langhami

OUMNH J.3311-27

648

667

 

Teratophoneus curriei

BYU 13719

974

757

 

Ceratosaurus nasicornis

UMNH VP 5278

982

759

1,500–3,499

Daspletosaurus torosus

UA 11

2,388

1,000

 

Allosaurus fragilis

AMNH 630

2,396

1,001

 

Gorgosaurus libratus

NMC 2120

2,709

1,040

 

Albertosaurus sarcophagus

ROM 807

2,934

1,066

>3,500

Saurophaganax maximus

OMNH 01123

3,591

1,135

 

S. meekerorum

FMNH PR 2716

3,917

1,166

 

Acrocanthosaurus atokensis

NCSM 14345

5,250

1,277

 

Tyrannosaurus rex

FMNH PR 2081

6,168

1,342.5

  1. For taxa preserved without a femur, we generalized mass estimates into bins using specified methodologies outlined in methods.
Back to article page