RAM V201017, GS-ENM (Cretaceous of the United States)

Also known as Grand Staircase-Escalante National Monument, BYU-Teratophoneus type locality

Where: Garfield County, Utah (37.5° N, 111.5° W: paleocoordinates 45.4° N, 82.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Kaiparowits Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Upper Campanian Kaiparowits Formation

•Horizon—Upper portion of the middle unit of the Kaiparowits Formation, 17 m above an ash bed tentatively correlated to ash KBC-109, which has been dated to 75.51± 0.15 Ma

• bed-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

• The Kaiparowits Formation is a non-marine sequence that was deposited upon a low-relief inland alluvial plain environment (Roberts et al. 2005). Radiometric dating demonstrates that it spans 76.1–74 Ma and thus dates to the Judithian North American Land Mammal Age (Cifelli et al. 2004; Roberts et al. 2005). It is contemporaneous with a number of well-studied late Campanian terrestrial vertebrate faunas of western North America (Gates et al. 2010).

Size class: macrofossils

Collected by BYU, Brigham Young University

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: T. D. Carr, T. E. Williamson, B. B. Britt and K. L. Stadtman. 2011. Evidence for high taxonomic and morphologic tyrannosauroid diversity in the Late Cretaceous (Late Campanian) of the American Southwest and a new short-skulled tyrannosaurid from the Kaiparowits Formation of Utah. Naturwissenschaften 98(3):241-246 [M. Carrano/M. Carrano/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137833: authorized by Roger Benson, entered by Roger Benson on 21.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Avetheropoda - Tyrannosauridae
Teratophoneus curriei n. gen. n. sp.
Teratophoneus curriei n. gen. n. sp. Carr et al. 2011 tyrannosaurine
The holotype includes a partial skull and skeleton of one individual, but more than one specimen number was assigned to the bones. BYU 8120/9396 includes the left lacrimal, right jugal, right frontal, right squamosal, left otoccipital and proötic, right otoccipital, right basisphenoid, both quadrates, left articular, cervical vertebra, left scapula, and left coracoid; BYU 8120/9397 includes the left humerus and left ulna; BYU 826/9402 includes the left maxilla; BYU 9398 includes the left dentary; and BYU 13719 is assigned to the left femur