Where: Oregon (44.1° N, 119.5° W: paleocoordinates 20.6° N, 56.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: cordilleranus ammonoid zone, Rail Cabin Argillite Formation, Sevatian (212.0 - 205.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collection methods: Repository: Northwest Museum of Natural History (NWMNH)

Primary reference: D. G. Taylor and J. Guex. 2002. The Triassic/Jurassic System boundary in the John Day Inlier, east-central Oregon. Oregon Geology 64:3-28 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157625: authorized by Matthew Clapham, entered by Matthew Clapham on 26.06.2014

Creative Commons license: CC BY (attribution)