Barrel Springs Arroyo 4 (USNM) (Cretaceous of the United States)

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

• coordinate stated in text

• outcrop-level geographic resolution

When: Naashoibito Member (Ojo Alamo Formation), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• 3-8 ft above base of Ojo Alamo Sandstone

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; concretionary, brown, white, conglomeratic sandstone

• "Sandstone, soft white, conglomeratic; contains brown concretions"

Size classes: macrofossils, mesofossils

Collected by Reeside in 1916; reposited in the USNM

Primary reference: C. W. Gilmore. 1919. Reptilian faunas of the Torrejon, Puerco, and underlying Upper Cretaceous formations of San Juan County, New Mexico. United States Geological Survey Professional Paper 119:1-68 [M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 62545: authorized by Matthew Carrano, entered by Matthew Carrano on 21.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

 Theropoda -
Theropoda indet. theropod