Where: Queensland, Australia (20.8° S, 147.7° E: paleocoordinates 56.1° S, 139.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• From the part of the stratigraphy including the Big Strophalosia zone and clarkei bed. Both horizons belong to the upper part of the Blenheim Formation correlated with the upper part of APP4.3 palynomorph zone or lower part of APP5 (Briggs, 1998). 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: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Commonwealth Palaeontological Collection (CPC)

Primary reference: B. Runnegar. 1967. Desmodont bivalves from the Permian of eastern Australia. Bureau of Mineral Resources, Geology and Geophysics Bulletin 96:1-108 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136662: authorized by Matthew Clapham, entered by Matthew Clapham on 01.12.2012

Creative Commons license: CC BY (attribution)