Where: Graubünden, Switzerland (46.6° N, 9.7° E: paleocoordinates 9.1° N, 21.0° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Prosanto Formation, Fassanian (242.0 - 235.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: R. L. Carroll and P. Gaskill. 1985. The nothosaur Pachypleurosaurus and the origin of plesiosaurs. Philosophical Transactions of the Royal Society B 309:343-393 [A. Dunhill/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 196661: authorized by Alex Dunhill, entered by Bethany Allen on 27.09.2018

Creative Commons license: CC BY (attribution)