Species: ostrommaysorum (KIRKLAND, GASTON & BURGE, 1993) OLSHEVSKY, 1993
Etymology: Named in honor of Dr. John Ostrom of Yale University for his ground breaking research on Deinonychus and its relationship to birds; and in honor of Chris Mays, president of Dinamation International Corporation, who is founding the Dinamation International Society set the stage for the research.
= Utahraptor ostrommaysi KIRKLAND, GASTON & BURGE, 1993
= Utahraptor ostromtrommaysorum BURGE, 1996 (sic)

Holotype: CEU 184v.86

Locality: CEU 91-1, Gaston Quarry west of the Yellow Cat Road, NE ¼, SE ¼, NE ¼, SW ¼, sec. 35, T22s, R21E on the Mollie Hogans, Grand County, Utah.

Horizon: Yellow Cat Member, Cedar Mountain Formation.

Biostratigraphy:

Age: Buffalogapian age, Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material: Right second pedal ungual and potentially other bones.\

Referred material:

CEU 184v.294: First manus ungual.

CEU 184v.260: Tibia.

CEU 184v.83: Lacrymal.

CEU 184v.400: Premaxilla.

 

Locality: BYU 7510, North of Arches National Park boundary 3.22 km. 1.2 km east of Dalton Well south of U. S. 160 in section 22, T24S, R20E, Dalton Wells Quarry, Grand County, Southeastern Utah.

Horizon: Member?, Middle Cedar Mountain Formation.

Biostratigraphy:

Age: Cashenranchian age, Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

 

Top BYU 13068: First manus ungual.

Bottom BYU 9438: Second manus ungual.

BYU 9429: Mid-caudal vertebrae.

BYU 9435, 9436: Distal caudal vertebrae.

CHURE, BRITT & SCHEETZ, 2007

Number: Not given: More than 240 skeletal elements.

Skeletal reconstruction.

 

DiCROCE & CARPENTER, 2001

Locality: Exact locality data is on file at DMNH, Tony’s Bone Bed, Grand County, Utah.

Horizon: Poison Strip Member, Middle Cedar Mountain Formation.

Biostratigraphy:

Age: Cashenranchian age, Aptian-Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

DMNH:

 

KIRKLAND, SIMPSON, DeBLIEUX, MADSEN, BOGNER, & TIBERT, 2016

Locality: Stikes Quarry, north of Arches National Park, east-central Utah.

Horizon: Yellow Cat Member, Cedar Mountain Formation.

Age: Buffalogapian age, Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

Bonebed

CEUM 184v300: Premaxill of an adult.

UMNH.VP.20487: Denary of a juvenile.

UMNH.VP.20488: Left premaxilla of a 'baby'.

UMNH.VP.20497: DEntary of a juvenile.

UMNH.VP.20501: Dentary of an adult.

UMNH.VP.