Where: San Juan County, New Mexico (36.2° N, 107.8° W: paleocoordinates 43.5° N, 85.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lenticular, gray, yellow, sandy mudstone

Size class: macrofossils

Reposited in the NMMNH

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

Primary reference: S. G. Lucas and R. M. Sullivan. 2000. Stratigraphy and vertebrate biostratigraphy across the Cretaceous-Tertiary boundary, Betonnie Tsosie Wash, San Juan Basin, New Mexico. In S. G. Lucas and A. B. Heckert (eds.), Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 17:95-104 [M. Carrano/K. Maguire/D. Nicholson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 54103: authorized by Matthew Carrano, entered by Kaitlin Maguire on 22.09.2005

Creative Commons license: CC BY (attribution)