Crittenden Springs drainage channel, float concretion (Triassic of the United States)

Where: Elko County, Nevada (41.6° N, 114.1° W: paleocoordinates 12.1° N, 37.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Thaynes Group, Spathian (251.3 - 247.2 Ma)

• Nodule is from float, but other similar nodules from the same channel yields ammonoids (e.g., Stacheites) typical of the early late Spathian Fengshanites/Prohungarites fauna.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary shale

Size class: macrofossils

Reposited in the NMMNH

Primary reference: C. Romano, J. F. Jenks, R. Jattiot, T. M. Scheyer, K. G. Bylund and H. Bucher. 2017. Marine Early Triassic Actinopterygii from Elko County (Nevada, USA): implications for the Smithian equatorial vertebrate eclipse. Journal of Paleontology 91:1025-1046 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 188755: authorized by Matthew Clapham, entered by Matthew Clapham on 15.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopterygii indet. ray-finned fish
NMMNH P-77357