Where: Wales, United Kingdom (52.9° N, 3.6° W: paleocoordinates 52.2° S, 18.4° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Upper Member (Allt Ddu Formation), Soudleyan (458.4 - 457.2 Ma)

• "Upper Allt Ddu Group, down to and including beds with Howellites ultima." Soudleyan in age.

•

•Now a formation

• group-level stratigraphic resolution

Environment/lithology: offshore; mudstone and siltstone

Size class: macrofossils

Primary reference: A. Williams. 1963. The Caradocian brachiopod faunas of the Bala District, Merionethshire. Bulletin of the British Museum of Natural History (Geology) 8(7):327-471 [m. patzkowsky/Z. Krug/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 43639: authorized by Mark Patzkowsky, entered by Zack Krug on 17.08.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)