Where: Elko County, Nevada (41.6° N, 114.1° W: paleocoordinates 13.2° N, 36.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Dinwoody Formation, Griesbachian (251.9 - 250.5 Ma)

• Ammonoids and conodonts suggest late Griesbachian age

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified mudstone

Size class: macrofossils

Preservation: mold/impression

Reposited in the NMMNH

Primary reference: J. F. Jenks, T. Maekawa, D. Ware, Y. Shigeta, A. Brayard and K. G. Bylund. 2021. Late Griesbachian (Early Triassic) ammonoids and nautiloids from the Dinwoody Formation at Crittenden Springs, Elko County, Nevada. New Mexico Museum of Natural History and Science Bulletin 86:1-23 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 220329: authorized by Matthew Clapham, entered by Matthew Clapham on 20.05.2021

Creative Commons license: CC BY (attribution)