Little Valley fish locality (Triassic to of the United States)

Where: San Juan County, Utah (38.1° 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", 150 feet below Wingate Sandstone; 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: "channel"; fine-grained, green siltstone

Size classes: macrofossils, mesofossils

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

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 135711: authorized by Richard Butler, entered by Richard Butler on 05.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Palaeonisciformes - Redfieldiidae
Cionichthys dunklei Schaeffer 1967
AMNH 5618, 5619, 5620, 5621, 5622, 5623
Lasalichthys hillsi n. gen. n. sp. Schaeffer 1967
AMNH 5636 (holotype), 5637, 5638, 5639, 5640, 5641, 5642, 5644, 5645, MCZ 9029, 9030, USNM 2344
Synorichthys stewarti Schaeffer 1967
AMNH 5665, 5666, 5667, 5673, 5674. USNM 23415. MCZ 9031, 9032
 Semionotiformes - Semionotidae
Semionotus sp. Agassiz 1843
AMNH 5679, 5680, 5682, 5685, 5686, 5687, 5688, 5689, 5690, 5692, 5693, 5694, 5695, 5698, 5702, 5703, 5705. USNM 23418, 23419, 23420, 23421. MCZ 9033
Hemicalypterus weiri n. gen. n. sp. Schaeffer 1967
USNM 23425 (holotype). AMNH 5709, 5710, 5711, 5712, 5713, 5714, 5715, 5716, 5717, 5718. USNM 23422, 23423, 23424, 23426, 23427, 23428, 23429. MCZ 9034
Coelacanthimorpha
 Coelacanthiformes - Coelacanthidae
Chinlea sorenseni n. gen. n. sp.
Chinlea sorenseni n. gen. n. sp. Schaeffer 1967 coelacanth
AMNH 5652, 5656, 5660, 5704