Where: New South Wales, Australia (32.8° S, 150.0° E: paleocoordinates 68.1° S, 158.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Echinalosia maxwelli brachiopod zone, Snapper Point Formation, Roadian (272.3 - 268.8 Ma)

• Listed as "Upper Marine Series" in Fletcher (1943), but classic "Rylstone" collection comes from locality where "Capertee Formation" (correlative of the Snapper Point, according to Briggs, 1998) unconformably overlies Devonian. Brachiopods suggest the Echinalosia maxwelli brachiopod zone, equivalent to the upper part of APP3.2 or lower 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. maxwelli zone is most likely Roadian.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified mudstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Primary reference: H. O. Fletcher. 1943. The genus Conocardium from Australian Palaeozoic rocks. Records of the Australian Museum 21(4):231-243 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98080: authorized by Pete Wagner, entered by Pete Wagner on 19.09.2010, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)