ammonites
Roadside between Por. 172 and Por. 92, Par. Chuwar (Triassic of Australia)

Also known as Mount Crosby

Where: Queensland, Australia (27.5° S, 152.8° E: paleocoordinates 58.1° S, 125.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Mount Crosby Formation (Ipswich Coal measures Group), Carnian (235.0 - 221.5 Ma)

• "at the bottom of the Ipswich Series" well below the Denmark Hill bed

•Carnian according to Barone-Nugent et al. 2003

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; lithified shale

• "Shale units indicate restricted quiet lacustrine conditions at various times on this piedmont fan." Jell, 2004
• "Mount Crosby Insect Shales (including Rhyolitie Tuff, Calcareous Sandstones and Conglomerate)" Dodds, 1949

•"Mounty Crosby formation…has 3 shale units, up to 6m thick near the bottom, middle & top of the unit. The upper two shale units are fossiliferous with prolific plant insect remains." Jell, 2004

Size classes: macrofossils, mesofossils

Preservation: adpression

Collection methods: Found by Jones & Denmead; University of Queensland Department of Geology collection, worked by Tindale between 1942 and 1944

Primary reference: B. Dodds. 1949. Mid-Triassic Blattoidea from the Mount Crosby Insect Bed. Papers - Department of Geology, University of Queensland 3(10):1-11 [M. Clapham/J. Karr/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122246: authorized by Matthew Clapham, entered by Jered Karr on 20.12.2011, edited by Matthew Clapham

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)