Where: Brewster County, Texas (29.4° N, 103.2° W)

• Paleocoordinates: 40.5° N, 71.9° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Javelina Formation, Late/Upper Maastrichtian (72.2 - 66.0 Ma)

• located about 25 meters above a tuff dated as 69.0 ± 0.9 Ma (U-Pb) (late Edmontonian to Lancian NALMA)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; mudstone

Size class: macrofossils

Reposited in the TMM

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

Primary reference: T. M. Lehman and A. B. Coulson. 2002. A juvenile specimen of the sauropod dinosaur Alamosaurus sanjuanensis from the Upper Cretaceous of Big Bend National Park, Texas. Journal of Paleontology 76(1):156-172 [M. Carrano/K. Maguire/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52090: authorized by Matthew Carrano, entered by Kaitlin Maguire on 21.07.2005

Creative Commons license: CC0 (CC0)