Big Indian Wash fish locality (Triassic to of the United States)

Where: San Juan County, Utah (38.2° N, 109.2° W: paleocoordinates 14.4° N, 47.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chinle Formation, Norian to Norian (228.0 - 201.3 Ma)

• "Upper part of Chinle Formation"; exact stratigraphic horizon not determined, but Schaeffer (1967) notes that the Moss Back, Owl Rock and Church Rock members of the Chinle are present in this area

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray sandstone

Size classes: macrofossils, mesofossils

Collected in the 1950s, 1960s; reposited in the AMNH

Primary reference: B. Schaeffer. 1967. Late Triassic fishes from the western United States. Bulletin of the American Museum of Natural History 135(6):285-342 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135710: authorized by Richard Butler, entered by Richard Butler on 05.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Palaeonisciformes - Redfieldiidae
Cionichthys dunklei n. gen. n. sp. Schaeffer 1967
AMNH 5615 (holotype), 5616, 5617
Lasalichthys hillsi Schaeffer 1967
AMNH 5643
 Semionotiformes - Semionotidae
Semionotus sp. Agassiz 1843
AMNH 5683