Species: mongoliensis OSBORN, 1924
Etymology: In reference to Mongolia, where the specimen was found.
= Troodon mongoliensis (OSBORN, 1924) PAUL, 1988
= Ornithoides oshiensis OSBORN, 1924 (nomen nudum)

Holotype: AMNH 6516

Locality: Bayan Zag (= Bayn Dzak, Shabarakh Usu GILMORE, 1943), Ömnögov (South Gobi), Mongolia.

Horizon: Djadochta Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Skull, dentary and vertebrae, pelvis, parts of hind limb and pes.

Referred material:

NORELL & HWANG, 2004

Locality: Grangers Flats sublocality, Ukhaa Tolgod, northeastern Nemegt Basin, Gurvan Tes Somon, Ömnögov (South Gobi), Mongolia.

Horizon: Djadokhta Formation or the Barun Goyot Formation.

Biostratigraphy:

Age: Campanian Stage? Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

IGM 100/1083: Left maxilla fragment, complete right quadrate, anterior cervical vertebra, an anterior dorsal vertebra, a small sacral fragment, 3 isolated posterior caudal vertebrae, proximal end of the right 4th metatarsal and its associated distal tarsal and 5 isolated phalanges, including a hypertrophied digit II ungual.

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Species: ? asiamericanus (NESOV, 1985) NESOV, 1995
Etymology: In reference to Asia and America.
= Pectinodon asiamericanus NESOV, 1985 (nomen nudum)
= Saurornithoides? asiamericanus (NESOV, 1985) OLSHEVSKY, 1991 (nomen nudum)
= Troodon asiamericanus (NESOV, 1985) NESOV, 1995

Holotype: CCMGE (TsNIGR museum) #49/12176

Locality: SSHD-8, From the northern border of Sheykhdzheyli, Uzbekistan.

Horizon: Upper part of Khodzhakul Formation (Khodzhakul’skaya Svita).

Biostratigraphy:

Age: Lower Cenomanian Stage, Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material: Tooth.

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