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St. Peter's brickpits, Paracyclotosaurus davidi holotype locality (Triassic of Australia)

Also known as Saint Peters

Where: New South Wales, Australia (33.9° S, 151.2° E: paleocoordinates 63.9° S, 135.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ashfield Shale Formation (Wianamatta Group), Anisian (247.2 - 242.0 Ma)

• Fossils come from the Ashfield Shale of the Wianamatta Group, dated as Anisian on the basis of palynomorphs and plant macrofossils (e.g. Warren 2012, JVP 32:538544).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; concretionary ironstone

• Paracyclotosaurus recovred from ironstone nodules in fish-bearing shales. Paracyclotosaurus davidi holotype is in "extremely hard and brittle ironstone", bone was largely "rotten". Impressions of skin and scales are preserved.

Size class: macrofossils

Preservation: cast, concretion

Collected by B. Dunston; reposited in the BMNH

Collection methods: salvage, mechanical,

• The original bone of the Paracyclotosaurus davidi holotype specimen was in very bad condition, but after the bone was removed from the hard ironstone matrix, casts were made from the matrix mold, and a mold was made from those casts. Casts of the original bone show a fair amount of detail.

Primary reference: D. M. S. Watson. 1958. A new labyrinthodont (Paracyclotosaurus) from the upper Trias of New South Wales. Bulletin of the British Museum (Natural History) Geology 3(7):233-262 [J. Alroy/R. Whatley/R. Butler] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38348: authorized by John Alroy, entered by Robin Whatley on 20.04.2004, edited by Richard Butler

Creative Commons license: CC BY (attribution)