Where: Wiltshire, United Kingdom (51.6° N, 1.9° W: paleocoordinates 42.2° N, 8.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cardioceras densiplicatum ammonoid zone, Arngrove Spiculite Member (Kingston Formation), Middle Oxfordian (161.2 - 155.7 Ma)

• Rhaxella Chert (Coralline Oolite Formation)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, cherty/siliceous sandstone

Size class: macrofossils

Primary reference: A. B. Smith. 2015. British Jurassic regular echinoids. Part 1, Introduction, Cidaroida, Echinothurioida, Aspidodiadematoida and Pedinoida. Monograph of the Palaeontographical Society 169(644):1-67 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 196071: authorized by Matthew Clapham, entered by Matthew Clapham on 03.09.2018

Creative Commons license: CC BY (attribution)