Where: Wales, United Kingdom (53.3° N, 4.3° W: paleocoordinates 65.0° S, 18.3° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Treiorwerth Formation, Arenig (478.6 - 466.0 Ma)
• "upper Arenig... uppermost metre of the 5 m exposed... shell beds as much as 10 cm thick"
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; sandstone and fine-grained conglomerate
Size class: macrofossils
Preservation: cast, mold/impression
Collection methods: bulk, hydrochloric,
• new collection from 1971
•part of the sample, from less weathered sediment, was "decalcified in hydrochloric acid"
Primary reference: R. B. Neuman and D. E. B. Bates. 1978. Reassessment of Arenig and Llanvirn age (early Ordovician) brachiopods from Anglesey, north-west Wales. Palaeontology 21(3):571-613 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 69096: authorized by John Alroy, entered by John Alroy on 18.02.2007
Creative Commons license: CC BY (attribution)