Where: England, United Kingdom (52.2° N, 1.8° W: paleocoordinates 36.8° N, 1.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Avicula contorta other zone, Westbury Formation (Penarth Group), Rhaetian (208.5 - 201.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified, gray claystone

Size class: macrofossils

Collection methods: quarrying, surface (in situ)

Primary reference: T. Wright. 1860. On the Zone of Avicula contorta, and the Lower Lias of the South of England. Quarterly Journal of the Geological Society 16:374-411 [M. Carrano/H. Street]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 96612: authorized by Matthew Carrano, entered by Hallie Street on 15.06.2010

Creative Commons license: CC BY (attribution)