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Duonychus tsogtbaatari

Osteichthyes - Therizinosauridae

Taxonomy
Duonychus tsogtbaatari was named by Kobayashi et al. (2025). It is not extant. Its type specimen is MPC-D 100/85. Its type locality is Urlibe Khudak, which is in a Cenomanian/Santonian fluvial conglomerate/sandstone in the Baynshire Formation of Mongolia.

Synonymy list
YearName and author
2025Duonychus tsogtbaatari Kobayashi et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
RankNameAuthor
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Saurischia()
—Theropoda()
—Neotheropoda
—AverostraPaul 2002
—Tetanurae
—Coelurosauria()
—Maniraptoriformes
—TherizinosauriaRussell 1997
superfamilyTherizinosauroidea
familyTherizinosauridae
genusDuonychus
speciestsogtbaatari

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Duonychus tsogtbaatari Kobayashi et al. 2025
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialsuperf
Locomotion: actively mobileo
Life habit: ground dwellingsuperf
Diet: herbivoresuperf
Reproduction: oviparoussuperf
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2005-09-11 17:03:44
Modified: 2005-09-11 19:03:44
Source: superf = superfamily, o = order
References: Kiessling 2004, Marsh 1875, Holtz et al. 2000

Age range: base of the Cenomanian to the top of the Santonian or 100.50000 to 83.60000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Cenomanian - Santonian100.5 - 83.6Mongolia (Ömnögovi) Duonychus tsogtbaatari (type locality: 239804)