Ankylosaur Flats, Ukhaa Tolgod (Cretaceous of Mongolia)

Also known as Big Mamma

Where: Omnogov, Mongolia (43.7° N, 100.9° E: paleocoordinates 40.8° N, 90.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Djadokhta Formation, Campanian (83.6 - 72.1 Ma)

• This may be sublocality 8, see text (p. 449) in Dashzeveg et al. (1995).

• bed-level stratigraphic resolution

Environment/lithology: eolian; sandstone

Size class: macrofossils

Collection methods: quarrying, surface (in situ), mechanical,

• Institute of Geology, Mongolia.

Primary reference: P. J. Makovicky and M. A. Norell. 1998. A partial ornithomimid braincase from Ukhaa Tolgod (Upper Cretaceous, Mongolia). American Museum Novitates 3247:1-16 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37211: authorized by John Alroy, entered by Robin Whatley on 05.03.2004, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• Specimen IGM 100/979 is referred to C. osmolskae. It is a postcranial skeleton on top of a nest, previously described by Clark et al. (1999).
 Avetheropoda - Alvarezsauridae
Kol ghuva n. gen. n. sp.3
Kol ghuva n. gen. n. sp.3 Turner et al. 2009 coelurosaur
IGM 100/2011
 Avetheropoda - Oviraptoridae
Citipati osmolskae n. gen. n. sp.1
Citipati osmolskae n. gen. n. sp.1 Clark et al. 2001 coelurosaur
Holotype is a nearly complete skeleton, IGM 100/978
 Avetheropoda - Ornithomimidae
Ornithomimidae indet. Marsh 1890 ornithomimid
IGM 100/987
 Avetheropoda - Troodontidae
Byronosaurus jaffei n. gen. n. sp.2
Byronosaurus jaffei n. gen. n. sp.2 Norell et al. 2000 coelurosaur