Also known as SSF 14.15

Where: South Australia, Australia (31.2° S, 138.9° E)

• Paleocoordinates: 0.8° N, 115.8° E (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Wirrealpa Limestone Formation, Toyonian (512.1 - 508.2 Ma)

• STRATIGRAPHIC RELATIONS: From isolated ourcrop of Wirrealpa Lmst which regionally overlies the Billy Creek Fm and underlies the Moodlatana Fm (both Cambrian). Laterally equivalent to Aroona Creek Lmst of Flinders Range and Ramsay, Stansbury, and Coobowie Lmst, and Corrodgery and Moonan Fm of Yorke Peninsula. 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).

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified limestone

Size class: macrofossils

Collection methods: COLLECTOR: Collected by B.C. Youngs, 1975 (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 64472: authorized by Austin Hendy, entered by Austin Hendy on 09.09.2006

Creative Commons license: CC0 (CC0)