Aust Cliff, Insect layer (BRSMG collection) (Triassic of the United Kingdom)

Where: England, United Kingdom (51.6° N, 2.6° W: paleocoordinates 36.1° N, 0.8° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Eustheria zone, Cotham Formation (Pernarth Group), Rhaetian (208.5 - 201.3 Ma)

• "The Cotham Beds contain a "landscape marble" development and an insect bearing Eustheria bed, above a comparatively thin development of the Westbury Beds."

• bed-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified, fine-grained, concretionary, stromatolitic, argillaceous limestone

• "These late Triassic deposits are marine marginal showing variable salinity (but never fully marine) …Contemporary dry land lay a short distance west across the estuary in South Wales." Krzeminski & Jarzembowski, 1999
• "fine-grained, agrillaceous algal limestone"Krzeminski & Jarzembowski, 1999

•The specimens occur mainly in blocks of Rhaetian limestone from the top of the section.

Size class: mesofossils

Preservation: mold/impression

Collected by E. Jarzembowski

Collection methods: surface (float), mechanical,

• Repository: Bristol City Museum & Art Gallery

Primary reference: W. Krzemiński and E. Krzemińska. 1999. Aenne triassica sp. n., the oldest representative of the family Chironomidae (Insecta: Diptera). Polskie Pismo Entomologiczne 68:445-449 [M. Clapham/J. Karr/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115590: authorized by Matthew Clapham, entered by Jered Karr on 02.09.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Dermaptera - Dermapteridae
Phanerogramma kellyi n. sp.
Phanerogramma kellyi n. sp. Tihelka 2019 earwig
Cf. 24653
 Diptera - Chironomidae
Aenne triassica n. sp.
Aenne triassica n. sp. Krzemiński and Krzemińska 1999 non biting midge
Cd 4127 Coll E. Jarzembowski