Also known as Plesiosaurus coelospondylus holotype locality

Where: England, United Kingdom (54.5° N, 0.6° W: paleocoordinates 42.1° N, 8.2° E)

• coordinate estimated from map

When: Hildoceras bifrons ammonoid zone, Early/Lower Toarcian (183.0 - 182.0 Ma)

• A heap of rubbish from the old alum works carried on in the upper Alum Shale, a part of the Liassic series on that coast, characterised by the Ammonites heterophyllus, Sow.

Environment/lithology: marine; shale

Size class: macrofossils

Collection methods: salvage

• Whitby Museum, Yorkshire

Primary reference: R. Owen. 1865. Part I. Sauropterygia. Monographs on the fossil Reptilia of the Liassic formations 17(75):1-40 [R. Benson/R. Benson/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118470: authorized by Roger Benson, entered by Roger Benson on 14.10.2011

Creative Commons license: CC BY (attribution)