Where: Wiltshire, United Kingdom (51.5° N, 1.9° W: paleocoordinates 42.1° N, 8.1° E)

When: Pseudocordata ammonoid zone, Ampthill Clay Formation, Late/Upper Oxfordian (161.2 - 155.7 Ma)

• Pseudocordata subzone

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified mudstone

Size class: macrofossils

Reposited in the BGS

• Substantial new exposures of this bed were created during the construction of the Keypoint Industrial Distribution Site [the Keypoint site] at South Marston, east of Swindon, in 1999–2001

Primary reference: J. K. Wright. 2010. The Aulacostephanidae (Ammonoidea) of the Oxfordian/Kimmeridgian boundary beds (Upper Jurassic) of southern England. Palaeontology 53:11-52 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 163980: authorized by Matthew Clapham, entered by Matthew Clapham on 21.11.2014

Creative Commons license: CC BY (attribution)