Also known as NMMNH Loc. L-4226

Where: San Juan County, New Mexico (36.3° N, 108.0° W: paleocoordinates 43.6° N, 85.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Naashoibito Member (Ojo Alamo Formation), Lancian (70.6 - 66.0 Ma)

• from lower part of layer at this site

• bed-level stratigraphic resolution

Environment/lithology: "channel"; concretionary, brown, white, conglomeratic sandstone

Size classes: macrofossils, mesofossils

Reposited in the USNM

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

• original collection by Gilmore in 1916, followed by main collecting by J. B. Reeside, Jr., June 1921 and additional specimens collected by C. H. Sternberg in 1922; specimens found about 200 ft apart and may represent one individual

Primary reference: B. S. Kues, T. M. Lehman, and J. K. Rigby, Jr. 1980. The teeth of Alamosaurus sanjuanensis, a Late Cretaceous sauropod. Journal of Paleontology 54(4):864-869 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70335: authorized by Matthew Carrano, entered by Matthew Carrano on 21.03.2007

Creative Commons license: CC BY (attribution)