Valle Pintado (lower) (Triassic of Argentina)

Where: San Juan, Argentina (30.1° S, 67.9° W: paleocoordinates 46.8° S, 33.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Scaphonyx-Exaeretodon-Herrerasaurus other zone, Ischigualasto Formation, Carnian (237.0 - 228.0 Ma)

• about 72 m above base of formation (Hollocher et al. 2005). This would place them within the "Scaphonyx-Exaeretodon-Herrerasaurus biozone" of Martinez et al. (2011: Science 331: 206) which reportedly represents "a narrow temporal interval from 231.5 to 229 Ma in the latter half of the Carnian stage".

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; paleosol/pedogenic, concretionary, carbonaceous mudstone

• oxidized (i.e. red, red-brown, purple, or tan) mudstone with carbonate nodules and slickensides. Described as a "proto-calcisol".

Size class: macrofossils

Primary reference: K. T. Hollocher, O. A. Alcober, C. E. Colombi and T. C. Hollocher. 2005. Carnivore coprolites from the Upper Triassic Ischigualasto Formation, Argentina: chemistry, mineralogy, and evidence for rapid initial mineralization. Palaios 20(1):51-63 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 47037: authorized by Matthew Carrano, entered by Matthew Carrano on 01.02.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Therapsida - Chiniquodontidae
Chiniquodon sp. Huene 1936 cynodont
Reptilia
 Rhynchosauria - Rhynchosauridae
Scaphonyx sp. Woodward 1907 rhynchosaur