Where: New South Wales, Australia (32.7° S, 151.3° E: paleocoordinates 67.6° S, 161.3° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Fenestella Shale Member (Branxton Formation), Roadian (272.3 - 268.8 Ma)
• Brachiopods in the formation suggest the Echinalosia davidi brachiopod zone, equivalent to the middle part of APP3.3 palynomorph zone. Laurie et al. (2016) dated zircons from the Rowan Formation in the Sydney Basin (in the underlying upper Echinalosia preovalis zone, or upper APP3.2) as 271.60 and 271.89 Ma, constraining its upper part to Roadian, given a Roadian-Wordian boundary around 266.9 Ma (Wu et al., 2020). 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 (Laurie et al. 2016). As a result, APP3.3 appears to fall entirely within the Roadian. As a result, the E. davidi zone is most likely Roadian.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; lithified shale
Size class: macrofossils
Primary reference: J. M. Crockford. 1941. Permian Bryozoa of eastern Australia, part I: a description of some previously-named species of Fenestrellinidae (Fenestellidae). Journal and Proceedings of the Royal Society of New South Wales 74:397-418 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 90388: authorized by Matthew Clapham, entered by Matthew Clapham on 18.07.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Stenolaemata | |
"Fenestrellina exserta n. sp." = Laxifenestella exserta, "Fenestrellina dispersa" = Fenestella dispersa
"Fenestrellina exserta n. sp." = Laxifenestella exserta Laseron 1918
"Fenestrellina dispersa" = Fenestella dispersa Crockford 1943 |