Barun Goyot Formation

Barun Goyot Formation
Stratigraphic range: Late Cretaceous
Type	Geological formation
Location
Region	Asia

The Barun Goyot Formation, dating from the Late Cretaceous Period, is located within and is widely represented in the Gobi Desert basin, in the Ömnögovi Province of Mongolia.

It was previously known as the "Lower Nemegt Beds", occurring beneath the Nemegt Formation and above the Djadokhta Formation. The Red Beds of Khermeen Tsav are also considered part of this formation. It is approximately 4 inches in thickness and was laid down roughly 80-71 mya, making it uncertain whether it should be classed as Campanian or Maastrichtian, although the latter is less likely. The Barun Goyot Formation preserves an environment of sand dunes, created from wind-eroded rocks (aeolian dunes).

Vertebrate paleofauna

Saurischians

Saurischians of the Barun Goyot Formation
Genus	Species	Location	Stratigraphic Position	Abundance	Notes	Images
Ceratonykus	Ceratonykus oculatus				An alvarezsaurid	Ceratonykus Conchoraptor Velociraptor
Conchoraptor	Conchoraptor gracilis				An oviraptorid
Gobipteryx	Gobipteryx minuta				An enantiornithine
Hollanda	Hollanda luceria				An ornithuromorh
Hulsanpes	Hulsanpes perlei				A maniraptoran of uncertain classification
"Ingenia"	"Ingenia" yanshini				An oviraptorid
Parvicursor	Parvicursor remotus				An alvarezsaurid
Quaesitosaurus	Quaesitosaurus orientalis				A titanosaur.
Velociraptor	Indeterminate				A dromaeosaurid. Also present in the Djadochta Formation and Bayan Mandahu Formation.

Lizards

Lizards of the Barun Goyot Formation
Genus	Species	Location	Stratigraphic Position	Abundance	Notes	Images
Estesia	Estesia mongoliensis				An anguimorph.
Ovoo	Ovoo gurvel				A Monitor lizard.
Proplatynotia	Proplatynotia longirostrata
Gobiderma	Gobiderma pulchrum				A Monstersaur.

Mammals

Mammals of the Barun Goyot Formation
Genus	Species	Location	Stratigraphic Position	Abundance	Notes	Images
Asiatherium	Asiatherium reshetovi				A marsupial.
Asioryctes	Asioryctes nemegetensis				A placental.
Barunlestes	Barunlestes butleri				A placental.
Catopsbaatar	Catopsbaatar catopsaloides				A multituberculate.
Chulsanbaatar	Chulsanbaatar vulgaris				A multituberculate.
Deltatheridium	Deltatheridium pretrituberculare				A marsupial.
Nemegtbaatar	Nemegtbaatar gobiensis				A multituberculate.

Ornithischians

Ornithischians of the Barun Goyot Formation
Genus	Species	Location	Stratigraphic Position	Abundance	Notes	Images
Bagaceratops	Bagaceratops rozhdestvenskyi				A ceratopsian.	Bagaceratops Saichania
Breviceratops	Breviceratops kozlowskii				A ceratopsian.
Lamaceratops	Lamaceratops tereschenkoi				A ceratopsian.
Platyceratops	Platyceratops tatarinovi				A ceratopsian.
Saichania	Saichania chulsanensis				An ankylosaur.
Tarchia	Tarchia gigantea				An ankylosaur.
Tylocephale	Tylocephale gilmorei				A pachycephalosaur.

See also

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• List of fossil sites (with link directory)
• List of dinosaur-bearing rock formations