west side, North Horn Mountain (Cretaceous of the United States)

Also known as 1937 Smithsonian Paleontological Expedition, USNM 15583

Where: Emery County, Utah (39.2° N, 111.3° W: paleocoordinates 47.2° N, 87.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: North Horn Formation, Maastrichtian (72.1 - 66.0 Ma)

• lower part of formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Pearce in 1937; reposited in the USNM

Collection methods: quarrying, mechanical,

Primary reference: C. W. Gilmore. 1938. Fossil hunting in Utah and Arizona. Explorations and Field-Work of the Smithsonian Institution in 1937 3480:1-4 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45719: authorized by Matthew Carrano, entered by Matthew Carrano on 29.11.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Neornithischia -
Ceratopsia indet. ornithischian
possibly new taxon; USNM 16577
 Neornithischia - Ceratopsidae
"? Arrhinoceratops utahensis n. sp." = Triceratops utahensis
"? Arrhinoceratops utahensis n. sp." = Triceratops utahensis Gilmore 1946 ceratopsid
USNM 15583, 15875