Also known as LSUMG 842, VL-842, TMM 43098

Where: Brewster County, Texas (29.2° N, 103.6° W: paleocoordinates 35.7° N, 77.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Upper Shale Member (Aguja Formation), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; lithified, paleosol/pedogenic, fine, nodular, green, muddy sandstone and silty mudstone

Size classes: macrofossils, mesofossils, microfossils

Collected by P. C. Sereno, C. A. Forster, J. T. Sankey in 1989-1991, 2000-2007

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

Primary reference: C. A. Forster, P. C. Sereno, T. W. Evans and T. Rowe. 1993. A complete skull of Chasmosaurus mariscalensis (Dinosauria, Ceratopsidae) from the Aguja Formation (late Campanian) of west Texas. Journal of Vertebrate Paleontology 13(2):161-170 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25073: authorized by Matthew Carrano, entered by Matthew Carrano on 27.08.2002

Creative Commons license: CC BY (attribution)