ammonites
Sierrita de la Cruz Creek breaks (Triassic to of the United States)

Where: Potter County, Texas (35.4° N, 102.2° W: paleocoordinates 9.6° N, 41.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Tecovas Formation (Dockum Group), Carnian to Carnian (235.0 - 205.6 Ma)

• latest Carnian or early Norian

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by A. J. MacAlpin in 1939; reposited in the UMMP

Primary reference: P. A. Murry. 1989. Geology and paleontology of the Dockum Formation (Upper Triassic), west Texas and eastern New Mexico. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 102-144 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85485: authorized by Matt Carrano, entered by Matt Carrano on 30.12.2008