Where: Queensland, Australia (21.5° S, 148.5° E: paleocoordinates 57.7° S, 146.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Blenheim Formation, Wordian to Wordian (266.9 - 259.5 Ma)

• Upper middle part of Middle Bowen beds. Fauna IIIc of Dickins et al. (1964), located at the top of Unit B and fauna IIIc. Fauna IIIc occurs between the Glendoo Member and the upper Blenheim Formation, so is roughly equivalent to the Moonlight Sandstone Member. The Moonlight Sandstone typically contains brachiopod zones correlated with APP4.2 palynomorph zone (Briggs, 1998). The APP4.2 zone was constrained as late Wordian to mid-Wuchiapingian age by U-Pb dating in Laurie et al. (2016). In the Sydney Basin, the Moonlight Sandstone brachiopod species are common in the Broughton Formation, dated as older than early Capitanian (a sample 2 m below the top yielded a radiometric date of 262.51 Ma in Metcalf et al., 2015). As a result, a Wordian-Capitanian age is assigned here.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

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 116752: authorized by Matthew Clapham, entered by Matthew Clapham on 11.09.2011

Creative Commons license: CC BY (attribution)