Mount Crosby Insect locality (Carsburg collection) (Triassic of Australia)

Where: Queensland, Australia (27.6° S, 152.8° E: paleocoordinates 58.5° S, 101.2° E)

• coordinate stated in text

• 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• Purdy & Cranfield (2013) reported an unpublished SHRIMP date of 226±2 Ma for the Brisbane Tuff.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

• Ipswich basin; transtensional rift in intermontane setting. Basin geometry affected by strike-slip movement along West Ipswich fault. Ipswich coal measures deposited near end of rifting phase.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by Allan Carsburg

• Repository: Allan Carsburg Collection, Brisbane (to be deposited in Queensland Museum)

Primary reference: K. J. Lambkin. 2020. Revision of Mesojassus Tillyard, 1916, from the Late Triassic of Queensland (Hemiptera: Cicadomorpha: Membracoidea: Archijassidae). Zootaxa 4718:413-422 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224015: authorized by Matthew Clapham, entered by Matthew Clapham on 30.12.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Archijassidae
Mesojassus ipsviciensis Tillyard 1916 true bug
ACC I.100
Mesojassus australis Evans 1956 true bug
ACC I.28, I.130
 Hemiptera - Hylicellidae
Hylicella colorata Evans 1956 true bug
ACC I.53
Crosbella elongata Evans 1956 true bug
ACC I.38a/b, I.39, I.49a/b, I.51
Triassoscelis anomala Evans 1956 true bug
ACC I.172a/b