Tsagan Sair (Paleocene of Mongolia)

Also known as Tsagan Hushu

Where: Omnogov, Mongolia (43.5° N, 100.4° E: paleocoordinates 43.2° N, 91.6° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Zhigden Member (Naran Bulak Formation), Late/Upper Paleocene (58.7 - 55.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

• Red sandy clay

Size classes: macrofossils, mesofossils

Collected by Joint Soviet–Mongolian Paleontological Expedition (led by V. Yu. Reshetov) in 1987; reposited in the PIN

Primary reference: V. R. Alifanov. 2018. A New Platynotan Lizard (Parasaniwidae, Anguimorpha) from the Late Paleocene of Southern Mongolia. Paleontological Journal 52(12):1432-1435 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 199607: authorized by Philip Mannion, entered by Philip Mannion on 06.02.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Parasaniwidae
Tsagansaurus nemegetensis n. gen. n. sp. Alifanov 2018 squamates
PIN, no. 4758/1 - holotype (right maxilla); previously listed as Necrosaurus sp. by Alifanov (2000, 2012)