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Bagaraatan ostromi

Reptilia

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 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
2012Bagaraatan ostromi Bell et al. p. 188
2013Bagaraatan ostromi Dalman p. 242

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

†Bagaraatan ostromi Osmólska 1996
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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.
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: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:39:15
Modified: 2009-01-03 22:39:15
Source: subo = suborder, o = order
References: Marsh 1875, Benton 1983

Age range: Maastrichtian or 72.10000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.1 - 66.0Mongolia (Omnogov) Coeluroidea indet. (type locality: 38022)