North Grapevine Hills (80 m), Big Bend N.P. (Cretaceous of the United States)

Where: Brewster County, Texas (29.4° N, 103.2° W: paleocoordinates 36.0° N, 82.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

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

• bed-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. 1985. Stratigraphy, Sedimentology, and Paleontology of Upper Cretaceous (Campanian–Maastrichtian) Sedimentary Rocks in Trans-Pecos Texas xiv-299 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52091: authorized by Matthew Carrano, entered by Kaitlin Maguire on 21.07.2005, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Saltasauridae
Alamosaurus sanjuanensis Gilmore 1922 saltasaurine
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid