Where: Nevada (38.5° N, 118.1° W: paleocoordinates 22.1° N, 55.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ferguson Hill Member (Sunrise Formation), Semicostatum (196.5 - 189.6 Ma)

• Coroniceras involutum assemblage, Tipperoceras mullerense horizon

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

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

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 157510: authorized by Matthew Clapham, entered by Matthew Clapham on 22.06.2014

Creative Commons license: CC BY (attribution)