BURGE, 1997 (pers. comm).

Locality: Utah.

Horizon: North Horn Formation.

Biostratigraphy:

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

Material:

Number: Not given: Fragmentary skeleton.

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CARTER, MONTGOMERY & BIASATTI, 1999

Locality: Big Bend National Park, Brewster County, Texas.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Centra, chevrons, claw core, coracoids, femora, fibula, humerus, ilia, ischia, metatarsals, pubes, radius, ribs, scapulas, sternal plates, a tibia, an ulna and numerous vertebrae of a minimum of 6 individuals, including 4 juveniles. There are 3 bone baring layers.

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COULSON, & LEHMAN, 1999, LEHMAN & COULSON, 2002

Locality: Near Grapevine Hills, Big Bend National Park, Brewster County, Texas.

Horizon: Javelina Formation.

Biostratigraphy:

Age: Latest Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Latest Cretaceous.
Note: From just below the K/T boundary.

Material:

TMM 43621-1: A series of cervical and dorsal vertebral centra and neural arches of a juvenile.

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FIORILLO, 1998

Locality: Big Bend National Park, Brewster County, Texas.

Horizon: Javelina Formation.

Biostratigraphy:

Age: Latest Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Latest Cretaceous.

Material:

Numbers: Not given: 3 individuals 2 adults and 1 juvenile.

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FRONIMOS, 2021

Locality: Northeast of McKinney Hills, Big Bend National Park, Brewster County, Texas.

Horizon: Upper Javelina Formation.

Biostratigraphy:

Age: Lancian, Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.

Material:

TMM 45888-1: Fragmentary osteoderm.

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LAWSON, 1972

Locality: 29°27’40”N, 103°9’32”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TMM 41398-1: Cervical centrum, dorsal neural spine.

 

Locality: 29°17’34”N, 103°31’34”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TMM 41450-1: First caudal vertebrae.

 

Locality: 29°9’20”N, 103°9’30”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TTU 542: Narly complete right femur.

TTU 546: Proximal caudal vertebra.

 

Locality: 20°27’40”N, 103°9’32”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TMM 40699: Middle caudal vertebra.

 

Locality: 29°27’40”N, 103°9’30”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TMM 41061: Right rib.

TMM 41450-2: Right ulna.

TMM 41063: Left pubis.

TMM 41060: Right ilium.

 

 

Locality: 29°17’34”N, 103°31’33”W, Big Bend National, Brewster County, Texas.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

TMM 41398-2: Proximal end of the left humerus.

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TYKOSKI, & FIORILLO, 2016

Locality: North-eastern part of the Big Bend National Park , Brewster County, Texas.

Note: Exact geographical information are avaible at the Perot Museum of Nature and Science, in Dallas, Texas for qualified researchers.

Horizon: Lower Javelina Formation.

Biostratigraphy:

Age: Lancian Latest Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Latest Cretaceous.

Material:

BIBE 45854: 9 mid and posterior cervical vertebrae (C6 to C14).

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WICK & LEHMAN, 2014

Localty: 'Willow' locality, Big Bend National, Brewster County, Texas.

Note: Exact locality data is available for qualified individuals at the Vertebrate Paleontology Labratory at the Jackson School of Geosciences, University of Texas at Austin.

Horizon: Lower Javelina (Tornillo) Formation.

Biostratigraphy:

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

Material:

AMH 21531: Right femur.

TMM 46052-1: Left femur.

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WOODWARD & LEHMAN, 2009

Localiy: Big Bend National Park , Brewster County, Texas.

Horizon: Black Peaks Formation.

Biostratigraphy:

Age: Uppermost Maastricthian (near the Cretaceous/Tertiary boundary), Uppermost Senonian Stage, Uppermost Gulf Epoch, Latest Cretaceous.

Material:

TM field no. TL 05-8: Ilium.

TMM 41541: Dorsal vertebrae and sacrum. Note: Ligaments soft tissue (WOODRUFF, ATWOOD, & MADILL, 2016)

TMM 41541-1 (field number TL 05-5), 40597-7: Ischia.

TMM 42495-7: Middle shaft of an ischium.

TMM 43090-2: An adult femur.

TMM 43598-1: Interiors of 2 proximal caudal vertebrae.

TMM 43598-2: Incomplete dorsal centrum.

TMM 43598-3: Mid shaft of a femur.

TMM 43598-4: Distal end of a right metatarsal II.

TMM 43598-5: Nearly complete anterior dorsal vertebra.

TMM 43598-6: Incomplete cervical?

TMM 43599-1: Fifth? Caudal.

TMM 43599-1: Rib segment.

TMM 45601-1: Right fibula.

TMM 45854-1 to 1J: A series of 10 rib segments.

TMM 45602-1: Right tibia.

TMM 45855-1: Proximal end of a right metacarpal II.

TMM 45855-2: Proximal end of a left dorsal rib.

TMM 45855-3: Rib segment.

Note: Found a meter away from TMM 45855-2.

TMM 45855-4: Proximal end of a left scapula.

TMM 45862-1: Proximal part of the shaft of a left ischium.

TMM 45864-1: Anterior half of a mid-caudal centrum.

TMM 45865-1: Immature distal caudal vertebra.

TMM 45857-1: Small left humeus.

TMM 45859-1: Right femur.

TMM 45861-1: A narl complete left fibula.

TMM 45863-1: Right humerus.

TMM 43600-2: Complete right humerus.

PAUL, 2025

TMM 45891-1-17: 5 complet and partial dorsals, sacral fragments, patial anteiror caudal, transverse porcess, left and right nearly complte humeri, nearly complte left ilium, fragmtn of right ilium, nearly complete left pubis, and nearly complete left ischium.