Where: Queensland, Australia (27.5° S, 152.8° E: paleocoordinates 58.5° S, 101.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mount Crosby Formation, Norian (228.0 - 208.5 Ma)

• Purdy & Cranfield (2013) reported an unpublished SHRIMP date of 226±2 Ma for the Brisbane Tuff. Therefore, the Blackstone Formation may be considered younger than 226 Ma in absolute age. Thus, the Ipswich Coal Measures above the Brisbane Tuff, which is to say, the succession from the Mount Crosby Formation to the top of the Blackstone Formation must now be considered Norian.

• bed-level stratigraphic resolution

Environment/lithology: lacustrine - small; lithified shale

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by R.J. Tillyard; reposited in the BMNH

Primary reference: V. A. Blagoderov. 1999. New Bibionomorpha from the Triassic of Australia and Jurassic of central Asia with notes on Paraxymyiidae Rohdendorf (Insecta, Diptera). Proceedings of the First International Palaeoentomological Conference 11-15 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113431: authorized by Matthew Clapham, entered by Matthew Clapham on 30.07.2011

Creative Commons license: CC BY (attribution)