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

Where: Queensland, Australia (27.6° S, 152.8° E: paleocoordinates 58.5° S, 101.1° 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• Purdy & Cranfield (2013) reported an unpublished SHRIMP date of 226±2 Ma for the Brisbane Tuff.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. 2014. Psychopsoid Neuroptera (Psychopsidae, Osmylopsycopidae) from the Queensland Triassic. Australian Entomologist 41:57-76 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 162404: authorized by Matthew Clapham, entered by Matthew Clapham on 24.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Dysmorphoptilidae
Mesocixius parvus Evans 1956 true bug
ACC I.31
 Neuroptera - Osmylopsychopidae
Osmylopsychops spillerae Tillyard 1923 lacewing
ACC I.19