Three Corners tracksite (upper) (Triassic of the United States)

Also known as Tucker Ranch

Where: Las Animas County, Oklahoma (38.0° N, 103.0° W: paleocoordinates 12.8° N, 42.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Sheep Pen Sandstone Formation (Chinle Group), Norian (228.0 - 208.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; sandstone

Size class: macrofossils

Preservation: mold/impression, trace

Collection methods: surface (in situ),

Primary reference: K. L. Conrad, M. G. Lockley, and N. K. Prince. 1987. Triassic and Jurassic vertebrate-dominated trace fossil assemblages of the Cimarron Valley region: implications for paleoeology and biostratigraphy. In S. G. Lucas & A. P. Hunt (ed.), New Mexico Geological Society 38th Annual Fall Field Conference, Northeastern New Mexico. New Mexico Geological Society Guidebook 38:127-138 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 192752: authorized by Matthew Carrano, entered by Matthew Carrano on 18.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Saurischia - Eubrontidae
Grallator (Grallator) sp. Olsen and Galton 1984 theropod
 Pseudosuchia - Chirotheriidae
? Brachychirotherium sp. Beurlen 1950 archosaur