Where: Idaho (42.1° N, 111.2° W: paleocoordinates 11.5° N, 35.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Columbites ammonoid zone, Thaynes Formation, Spathian (251.3 - 247.2 Ma)

• Horizon H4

• bed-level stratigraphic resolution

Environment/lithology: deep-water; lithified, nodular shale

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). Memoires de Geologie (Lausanne) 49:1-82 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 109402: authorized by Matthew Clapham, entered by Matthew Clapham on 15.05.2011

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)