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Bagaraatan ostromi

Reptilia - Avetheropoda

Taxonomy
Bagaraatan ostromi was named by Osmólska (1996). Its type specimen is ZPal MgD-I/108, a partial skeleton, and it is a 3D body fossil. Its type locality is Nemegt, Northern Sayr, site 26 [PMPE], which is in a Campanian/Maastrichtian terrestrial sandstone/sandstone in the Nemegt Formation of Mongolia. It is the type species of Bagaraatan. It was considered monophyletic by Currie (2000).

Synonymy list
YearName and author
1996Bagaraatan ostromi Osmólska p. 3 figs. 1-13
1997Bagaraatan ostromi Osmólska p. 472
2000Bagaraatan ostromi Currie p. 449
2003Bagaraatan ostromi Rauhut p. 32
2004Bagaraatan ostromi Holtz, Jr. p. 112
2010Bagaraatan ostromi Choiniere et al. p. 1792
2013Bagaraatan ostromi Dalman p. 242

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
RankNameAuthor
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Archosauromorpha(Huene 1946)
Crocopoda
ArchosauriformesGauthier 1986
Eucrocopoda
Archosauria()
informalAvemetatarsalia
Ornithodira
Dinosauromorpha
Dinosauriformes
Dinosauria()
Saurischia()
Theropoda()
Neotheropoda
AverostraPaul 2002
Tetanurae
orderAvetheropoda
suborderCoelurosauria
superfamilyTyrannosauroidea
genusBagaraatan
speciesostromi

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.

Diagnosis
ReferenceDiagnosis
H. Osmólska 1996Mandible with two surangular foramina, articular with oblique posterior surface and short retroarticular process; caudals with hollow, very thin-walled centra; hyposphene-hypantrum articulation stout, present in at least sixteen proximal caudals; prezygapophyses in proximal caudals with ridges on lateral surfaces; ilium with two deep depressions and a crestlike projection present on lateral surface of postacetabular process; femur with anterior crest below lesser trochanter; tibia and fibula fused distally with each other and with coalesced astralalocalcaneum.