Union Wash JGX-UWK (Triassic of the United States)

Where: California (36.7° N, 118.0° W: paleocoordinates 7.6° N, 44.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Keyserlingites subrobustus ammonoid zone, Union Wash Formation, Spathian (251.3 - 247.2 Ma)

• Horizon H23

• bed-level stratigraphic resolution

Environment/lithology: deep-water; lithified siltstone

Size class: macrofossils

Primary reference: J. Guex, A. Hungerbühler, J. F. Jenks, L. O'Dogherty, V. Atudorei, D. G. Taylor, H. Bucher and A. Bartolini. 2010. Spathian (Lower Triassic) ammonoids from western USA (Idaho, California, Utah and Nevada). Mémoires de Géologie (Lausanne) 49:1-82 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 109435: authorized by Matthew Clapham, entered by Matthew Clapham on 16.05.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ceratitida -
Courtilloticeras stevensi n. sp.
Courtilloticeras stevensi n. sp. Guex et al. 2005 ceratite
 Ceratitida - Danubitidae
Eodanubites (Dumitricaceras) judae n. sp.
Eodanubites (Dumitricaceras) judae n. sp. Guex et al. 2005 ceratite
 Ceratitida - Keyserlingitidae
Keyserlingites subrobustus, Keyserlingites pacificus
Keyserlingites subrobustus Mojsisovics 1886 ceratite
Keyserlingites pacificus Hyatt and Smith 1905 ceratite