Also known as SSF 14.11

Where: South Australia, Australia (31.3° S, 138.9° E: paleocoordinates 16.9° N, 162.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Wirrealpa Limestone Formation, Toyonian (512.9 - 510.2 Ma)

• STRATIGRAPHIC RELATIONS: From Wirrealpa Lmst which overlies the Billy Creek Fm (also Cambrian). Laterally equivalent to Aroona Creek Lmst of Flinders Range and Ramsay, Stansbury, and Coobowie Lmst, and Corrodgery and Moonan Fm of Yorke Peninsula THICKNESS: From unit which could be as much as ~6 m thick within 100 m thick section. AGE: Traditionally assigned to Middle Cambrian based on lateral facies relationships, lithostratigraphy, and age diagnostic trilobites. However, new data from sequence stratigraphy and paleontological evidence suggest a late Early Cambrian age (equivalent to Toyonian of Siberan Platform). STRATIGRAPHIC POSITION: 25-30 m below PBDB# 64469 and 6 m above contact with Billy Creek Fm.

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, concretionary, gray, silty limestone

Size class: macrofossils

Collection methods: COLLECTOR: Collected by B.C. Youngs (see Youngs, 1977). REPOSITORY: SADME (South Australia Department of Mines and Energy, Adelaide.

Primary reference: G. A. Brock and B.J. Cooper. 1993. Shelly fossils from the Early Cambrian (Toyonian) Wirrealpa, Arrona Creek, and Ramsay Limestones of South Australia. Journal of Paleontology 67(5):758-787 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64468: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2006

Creative Commons license: CC BY (attribution)