Beneath the concrete floor of British Rail Engineering, Swindon (Jurassic to of the United Kingdom)

Where: England, United Kingdom (51.6° N, 1.8° W: paleocoordinates 42.3° N, 8.1° E)

• coordinate based on nearby landmark

When: Kimmeridge Clay Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected in 1975; reposited in the BMNH

Collection methods: surface (in situ), mechanical,

Primary reference: L. B. Halstead. 1989. Plesiosaur locomotion. Journal of the Geological Society 146(1):37-40 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138008: authorized by Roger Benson, entered by Roger Benson on 02.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sauropterygia - Pliosauridae
Pliosaurus brachyspondylus Owen 1840 plesiosaur
BMNH R8928, a complete, but disarticulated, skeleton