Violettown Road, Pincombe outcrop, Belmont (Knight 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

• small collection-level geographic resolution

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

• Insect bed is 30 cm thick, but insects concentrated approximately 2 cm below top. 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, fine-grained, tuffaceous, gray 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 O. Le M. Knight

Primary reference: C. Davis. 1943. A new species of Permithone (Neuroptera, Planipennia) from the Upper Permian of New South Wales. Proceedings of the Linnean Society of New South Wales 68:11-12 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122434: authorized by Matthew Clapham, entered by Matthew Clapham on 27.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Hemiptera - Permopsyllidiidae
Psyllidiana davisia n. gen. n. sp.
Psyllidiana davisia n. gen. n. sp. Evans 1943 true bug
 Hemiptera - Prosbolidae
Homaloscytina plana Tillyard 1926 true bug
 Dicondylia - Permithonidae
"Permithone venosa n. sp." = Permopsychops belmontensis
"Permithone venosa n. sp." = Permopsychops belmontensis Tillyard 1926 winged insect