Belmont (Pincombe 1925 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 T.H. Pincombe in 1925

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 122416: 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
 Hemiptera - Prosbolidae
Orthoscytina pincombei n. sp., Elliptoscarta ovalis n. gen. n. sp., "? Permodiphthera dubia n. sp." = Permobrachus dubia
Orthoscytina pincombei n. sp. Tillyard 1926 true bug
February 24, 1925
Elliptoscarta ovalis n. gen. n. sp. Tillyard 1926 true bug
February 23, 1925
"? Permodiphthera dubia n. sp." = Permobrachus dubia Tillyard 1926 true bug
February 24, 1925
 Mecoptera - Permochoristidae
"Permochorista pincombei n. sp." = Mesochorista australica, "Permochorista inaequalis n. sp." = Mesochorista australica, "Permochorista jucunda n. sp." = Kazakhopanorpa jucunda
"Permochorista pincombei n. sp." = Mesochorista australica Tillyard 1918 scorpionfly
"Permochorista inaequalis n. sp." = Mesochorista australica Tillyard 1918 scorpionfly
"Permochorista jucunda n. sp." = Kazakhopanorpa jucunda Tillyard 1926 scorpionfly
October 31, 1925
 Dicondylia - Permithonidae
"Permosmylus pincombeae n. gen. n. sp." = Permithone belmontensis
"Permosmylus pincombeae n. gen. n. sp." = Permithone belmontensis Tillyard 1922 winged insect