Where: Nevada (38.9° N, 117.9° W: paleocoordinates 21.6° N, 55.5° W)

• coordinate estimated from map

When: Harbledownense ammonoid zone, Five Card Draw Member (Sunrise Formation), Sinemurian (199.3 - 190.8 Ma)

Environment/lithology: marine; siliciclastic sediments

Size class: macrofossils

Preservation: cast

Primary reference: D. Taylor, J. Guex, and M. Rakus. 2001. Hettangian and Sinemurian ammonoid zonation for the western Cordillera of North America. Bulletin de la Société Vaudoise des Sciences Naturelles 87(4):381-421 [J. Pálfy/E. Kovács]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 201275: authorized by József Pálfy, entered by Emma Kovács on 02.05.2019

Creative Commons license: CC BY (attribution)