Shinekhudag Formation
Geological formation in Dundgov, Mongolia
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The Shinekhudag Formation (also known as Shinekhudug Formation, Shinekhudag or Shinekhudukskaya Svita) is a geological formation in Dundgov, Mongolia whose strata date back to the Early Cretaceous. Dinosaur remains have been recovered from it.[2][3] It has classically been considered Aptian-Albian in age. Khand et al. (2000) suggested that the age of formation is Berriasian-Hauterivian based on ostracod biostratigraphy.[4] But, Hasegawa et al. (2018) suggested Shinekhudag Formation was deposited between 123.8 ±2.0 Ma and 118.5 ±0.9 Ma of the Barremian-early Aptian.[5]
UnderliesKhukhtek Formation[1]
OverliesTsagaantsav Svita
| Shinekhudag Formation | |
|---|---|
| Stratigraphic range: Barremian-Aptian, ~ | |
| Type | Geological formation |
| Underlies | Khukhtek Formation[1] |
| Overlies | Tsagaantsav Svita |
| Lithology | |
| Primary | Sandstone, argillite, marl, clay |
| Location | |
| Region | Dundgov |
| Country | Mongolia |
Vertebrate paleofauna
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Dinosaurs
Trackways of theropods and sauropods have been reported.[6]
| Genus | Species | Location | Stratigraphic Position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| Harpymimus[7] | H. okladnikovi[7] | Khuren Dukh | "Partial skull with incomplete skeleton."[8] | A primitive ornithomimosaur. | .jpg) | |
| Iguanodon[9] | I. orientalis[9] | Khamarin-Khural | "Fragmentary skeleton."[9] | A dubious iguanodont of uncertain affinities.[10][11] | ||
| Psittacosaurus sp. | Indeterminate | Khuren Dukh | "Partial skeletons."[12][13] | A primitive ceratopsian. |  | |
