Genus: Tyrannosaurus OSBORN, 1905

Species: rex OSBORN, 1905

Referred material:

GLUT, 2006

Locality: Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Fragmentary skeleton.

Note: Has skin impressions.

 

Locality: Don and Allison Wyrick Ranch, north of Baker, Fallon County, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, lower Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

BHI 6230 (Wyrex): Partial braincase, right squamosal, postorbital, jugal, surangular, articular, prearticular, angular, 2 nearly complete legs adn feet (lacking to date [2008] the left tibia, astragalus, calcanieum, 1 left tarsal, both metatarsal 1, and 5 pes phalanges from the right foot), 5 dorsal, 1 cervical, 11 caudal vertebrae, 5 cervical, 15 dorsal ribs, both ischia, right pubis, right ilium, left scapula, coracoid, humerus, ulna, carpals, all 3 metacarpals, and 17 gastralia.

Note: Skin impression.

 

SCHWEITZER, WITTMEYER & HORNER, 2005, LARSON, N., 2008

Locality: Near Fort Peck Lake, Charles M. Russell National Wildlife Refuge, Garfield County, Montana.

Horizon: Base of the Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, lower Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

MOR 1125 (Bob, B-rex): Both premaxilla, dentary, plus a few other skull bones, 3 cervical, 4 dorsal, 5 sacral, 12 caudal vertebrae, 7 chevrons, 4 cervical, 13 dorsal ribs, left scapula, left coracoid, furcula, left ulna, both femora, tibiae, fibulae, right calcaneum, right astragalus, and 11 pes phalanges.
Note: Soft tissue from the marrow of a left femur shows it is a female (SCHWEITZER, WITTMEYER & HORNER, 2005).

Note: Has skin impressions around the femur (SCHWEITZER, WITTMEYER & HORNER, 2004).