southwest toe, North Horn Mountain (Cretaceous of the United States)

Also known as 1937 Smithsonian Paleontological Expedition, USNM 15560

Where: Emery County, Utah (39.2° N, 111.2° W: paleocoordinates 47.0° N, 88.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: North Horn Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• lower part of formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by G. Pierce in 1937; reposited in the USNM

Collection methods: quarrying, mechanical,

• discovered by G. B. Pierce in June, 1937

Primary reference: Anonymous. 1937. Pasture of giant dinosaurs unearthed in Utah. Science Digest 2(5):65 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45718: authorized by Matthew Carrano, entered by Matthew Carrano on 29.11.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Saltasauridae
Alamosaurus sanjuanensis Gilmore 1922 saltasaurine
USNM 15560