Where: New South Wales, Australia (32.5° S, 151.2° E: paleocoordinates 67.5° S, 160.8° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Echinalosia discinia brachiopod zone, Belford Formation, Roadian (272.3 - 268.8 Ma)
• Approximately 130 m below top of unit. Brachiopods suggest the Echinalosia discinia zone, correlated with the upper part of APP3.3 to APP4.1 palynomorph zone (Briggs, 1998). There are no direct radiometric constraints on APP3.3, although the top of the underlying APP3.2 is around 271.6 Ma (Laurie et al., 2016), placing it near the Kungurian-Roadian boundary or in the lower Roadian. Strata in Western Australia assigned to APP4.1 yielded U-Pb ages of 269.25 Ma or younger, constraining the upper boundary of APP3.3 to the late Roadian. As a result, APP3.3 appears to fall entirely within the Roadian. The top of APP4.1 is likely late Wordian, constrained by earliest Capitanian radiometric dates in the lower part of APP4.2 (Laurie et al., 2016). The Broughton Formation, higher in the Sydney Basin succession, also yields an early Capitanian radiometric date (262.51 Ma) from its uppermost part (Metcalfe et al., 2015).
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Preservation: mold/impression
Collection methods: Repository: University of New England
Primary reference: G. McClung. 1978. Morphology, palaeocology and biostratigraphy of Ingelarella (Brachiopoda : Spiriferida) in the Bowen and Sydney Basins of Eastern Australia. Geological Survey of Queensland Publication 365:17-87 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 103706: authorized by Matthew Clapham, entered by Matthew Clapham on 31.01.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Echinalosia discinia Waterhouse 1986 | |
Rhynchonellata | |
"Ingelarella ? oviformis" = Tomiopsis oviformis, Ingelarella belfordensis
"Ingelarella ? oviformis" = Tomiopsis oviformis M'Coy 1847
Ingelarella belfordensis McClung 1978 |