Belmont (Tillyard 1921 coll) (Permian of Australia)

Where: New South Wales, Australia (33.0° S, 151.7° E: paleocoordinates 66.5° S, 144.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Belmont Conglomerate Member (Croudace Bay Formation), Changhsingian (254.2 - 252.2 Ma)

• From horizon 70 feet below base of Fassifern Coal, according to Knight (1950). Fassifern coal dated at 253.38 +/- 0.08 Ma and the underlying Upper Pilot A seam at 253.55 +/- 0.06 Ma by Metcalf et al. (2015).

• bed-level stratigraphic resolution

Environment/lithology: pond; lithified, tuffaceous chert

• Insect bed appears to have been deposited in shallow ephemeral floodbasin ponds and is stratigraphically positioned between fast-flowing river and coal swamp deposits. Volcanic ash draped the area, infilling the pools and preserving the taphocoenosis. Switch to contractional deformation in Hunter-Bowen orogeny occurred c. 265 Ma; Sydney basin transitioned into foreland basin.

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by R.J. Tillyard in 1921

• Specimen in Cawthron Institute Collection (R.J.T. 12.xi.21)

Primary reference: R. J. Tillyard. 1926. Upper Permian insects of New South Wales Part 1. Introduction and the order Hemiptera. Proceedings of the Linnean Society of New South Wales 51:1-30 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122415: authorized by Matthew Clapham, entered by Matthew Clapham on 26.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Mecoptera - Permochoristidae
"Permochorista osbornei n. sp." = Mesochorista australica
"Permochorista osbornei n. sp." = Mesochorista australica Tillyard 1918 scorpionfly
November 12, 1921
 Hemiptera - Prosbolidae
Orthoscytina irregularis n. sp.
Orthoscytina irregularis n. sp. Tillyard 1926 true bug
November 12, 1921