Where: Lander County, Nevada (38.8° N, 117.6° W: paleocoordinates 22.3° N, 55.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: trigonatum ammonoid zone, Ferguson Hill Member (Sunrise Formation), Bucklandi (196.5 - 189.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Reposited in the CAS

Primary reference: D. G. Taylor. 1998. Late Hettangian-early Sinemurian (Jurassic) ammonite biochronology of the western Cordillera, United States. Geobios 31:467-497 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157505: authorized by Matthew Clapham, entered by Matthew Clapham on 22.06.2014

Creative Commons license: CC BY (attribution)