Where: Nizhnii Novgorod, Russian Federation (57.9° N, 47.1° E: paleocoordinates 31.8° N, 38.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Archosaurus rossicus other zone, Vyatkian (259.5 - 257.4 Ma)

• Vyazniki Assemblage; the terminal part of the Late Tatarian (terminal part of the Vyatkian) (Golubev 2000; Benton 2012, Geology).

•

•"similarly old collection [as the type locality of Archosaurus rossicus]" (Gower & Sennikov, 2000);

•"same geological age as the type locality [of Megawhaitsia patrichae]" (Ivakhnenko, 2008);

•the type locality of M. patrichae and A. rossicus is Vyazniki, being Vyatkian in age

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: D. J. Gower and A. G. Sennikov. 2000. Early Archosaurs from Russia. In M. J. Benton, M. A. Shishkin, D. M. Unwin & E. N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press, Cambridge 140-159 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 86356: authorized by Johannes Mueller, entered by Torsten Liebrecht on 31.01.2009, edited by Emma Dunne and Richard Butler

Creative Commons license: CC BY (attribution)