Where: Queensland, Australia (21.1° S, 148.2° E: paleocoordinates 56.3° S, 140.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Blenheim Formation, Wuchiapingian (259.9 - 254.2 Ma)

• Stratigraphically above the Big Strophalosia zone in the column of Dickins et al. (1964). Big Strophalosia zone belongs to the Pseudostrophalosia clarkei zone of Briggs (1998), which is correlated with the upper part of APP4.3 palynomorph zone (Briggs, 1998). As the locality is above the Big Strophalosia zone, it could belong to the P. ingelarensis zone, correlated with the APP5 palynomorph zone. The APP4.3 zone was constrained as mid-Wuchiapingian age and APP5 as mid-Wuchiapingian through Changhsingian age by U-Pb dating in Laurie et al. (2016). However, overlying units in the Fort Cooper Coal Measures yield latest Wuchiapingian U-Pb ages (Phillips et al., 2018), constraining the upper Blenheim Fm to Wuchiapingian.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: B. Runnegar. 1965. The bivalves Megadesmus Sowerby and Astartila Dana from the Permian of eastern Australia. Journal of the Geological Society of Australia 12(2):227-252 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 116749: authorized by Matthew Clapham, entered by Matthew Clapham on 11.09.2011

Creative Commons license: CC BY (attribution)