Where: Queensland, Australia (27.6° S, 152.8° E: paleocoordinates 58.6° S, 101.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Blackstone Formation (Ipswich Coal Measures Group), Norian (228.0 - 208.5 Ma)

• Insect bed is about 50 feet above the Bluff coal seam and 50 feet below the Aberdare coal seam. Fossil bed is 15 cm thick. Purdy & Cranfield (2013) reported an unpublished SHRIMP date of 226±2 Ma for the Brisbane Tuff.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: pond; lithified, sandy siltstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Collected by Dunstan in 1909

Primary reference: R. J. Tillyard and B. Dunstan. 1916. Mesozoic and Tertiary Insects of Queensland and New South Wales. Descriptions of the fossil Insects and stratigraphical features. Queensland Geological Survey (253)1-63 [M. Clapham/J. Karr/R. Day]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111777: authorized by Matthew Clapham, entered by Jered Karr on 28.06.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)