Where: Oaxaca, Mexico (17.0° N, 97.0° W: paleocoordinates 11.4° N, 49.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Late/Upper Jurassic (161.5 - 145.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by G. R. Wieland in 1909

Primary reference: M.-C. Buchy. 2008. Reevaluation of the holotype of Plesiosaurus (Polyptychodon) mexicanus, Wieland, 1910 from the Upper Jurassic of Mexico: a thalattosuchian, not a sauropterygian. Revista Mexicana de Ciencias Geológicas 25(3):517-522 [P. Mannion/J. Tennant/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137352: authorized by Philip Mannion, entered by Jonathan Tennant on 14.12.2012, edited by Graeme Lloyd

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