Where: Esmeralda County, Nevada (37.4° N, 117.4° W: paleocoordinates 1.2° S, 95.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Arcuolenellus arcuatus trilobite zone, Harkless Formation, Dyeran (515.3 - 511.2 Ma)

• The macrofauna described by Palmer (1964) includes olenellids, oryctocephalids and trilobite genera such as Bonnia and Zacanthopsis, clearly indicating a late Early Cambrian age (Dyeran Stage, or Bonnia-Olenellus Zone; Palmer 1998). The presence of younger Early Cambrian trilobite assemblages (including Bristolia) in the overlying Mule Springs and basal Emigrant Formations (Palmer 1964; Sundberg & McCollum 2003) indicate that the age of the assemblage may be attributable to the lower or middle parts of the Dyeran stage. PJW: This would probably be the Arcuolenellus arcuatus subzone.

• formation-level stratigraphic resolution

Environment/lithology: lithified, calcareous sandstone and lithified, sandy limestone

Size classes: macrofossils, mesofossils

Preservation: cast, replaced with calcite, replaced with phosphate

Reposited in the USNM

Primary reference: C. B. Skovsted and L. E. Holmer. 2006. The Lower Cambrian brachiopod Kyrshabaktella and associated shelly fossils from the Harkless Formation, southern Nevada. Geologiska Föreningens i Stockholm Förhandlingar 128(4):327-337 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96417: authorized by Pete Wagner, entered by Pete Wagner on 07.06.2010, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)