Also known as SSF 14.8

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 and is overlain by the Moodlatana Fm - both bounding units are Cambrian in age. Laterally equivalent to Arfrona Creek Lmst of Flinders Range and Ramsay, Stansbury, and Coobowie Lmst, and Corrodgery and Moonan Fm of Yorke Peninsula THICKNESS: From bed less than 4 m thick within 130 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: 8 m above PBDB# 64464 and 20 m below PBDB# 64466.

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified 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 64465: authorized by Austin Hendy, entered by Austin Hendy on 08.09.2006

Creative Commons license: CC BY (attribution)