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- Iren_Dabasu_Formation abstract "The Iren Dabasu Formation is a Mesozoic geologic formation in the Iren Nor region of Inner Mongolia. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.The Upper Cretaceous Iren Dabasu Formation in the Iren Nor region of Inner Mongolia is typically referred to continental clastic sediments consisting of light grey fine sandstones, coarse sandstones and glutenites as well as mottled claystones and siltstones. This lithological unit has yielded plentiful dinosaur remains in quantity and group, also including a great deal of microfossil material. The stratigraphic sequence, sedimentary system, and the morphologies and assemblages of the paleontological taxa are summarized on the basis of previous studies on the Iren Dabasu Formation. The fine-grained floodplain sediments and the coarse-grained sediments of the point bar formed a series of repeated frequently binary sedimentary rhythms. The “binary structure” of the sedimentary rhythms strongly indicates meandering stream deposits rather than braided river deposits as previously thought. The ostracod and charophyte assemblages of the Iren Dabasu Formation has suggested a potential correlation with those of the Sifangtai Formation and the basal Mingshui Formation in the Songliao Basin. Therefore, the age of the Iren Dabasu Formation is considered to be limited to middle-late Campanian. Compared with the coeval Djadokhta Formation in the Gobi Basin, the dinosaur fauna of the Iren Dabasu Formation lacks the fossil record of protoceratopsids and squamates; some major paleontological taxa of the fauna tended to be large-sized evolution or the extreme gigantism during that period. These conditions are probably related to the humid climate of the Iren Nor region during the Late Cretaceous.".
- Iren_Dabasu_Formation thumbnail Bactrosaurus.JPG?width=300.
- Iren_Dabasu_Formation wikiPageID "16183764".
- Iren_Dabasu_Formation wikiPageRevisionID "549607686".
- Iren_Dabasu_Formation age "middle-late Campanian".
- Iren_Dabasu_Formation area "Iren nor near Erlian city".
- Iren_Dabasu_Formation country "China".
- Iren_Dabasu_Formation hasPhotoCollection Iren_Dabasu_Formation.
- Iren_Dabasu_Formation name "Iren Dabasu Formation".
- Iren_Dabasu_Formation overlies "Arshanto Formation".
- Iren_Dabasu_Formation region "Inner Mongolia".
- Iren_Dabasu_Formation thickness "30m".
- Iren_Dabasu_Formation type Formation_(stratigraphy).
- Iren_Dabasu_Formation subject Category:Mesozoic_geologic_formations.
- Iren_Dabasu_Formation type Abstraction100002137.
- Iren_Dabasu_Formation type Arrangement107938773.
- Iren_Dabasu_Formation type Formation108426461.
- Iren_Dabasu_Formation type Group100031264.
- Iren_Dabasu_Formation type MesozoicGeologicFormations.
- Iren_Dabasu_Formation comment "The Iren Dabasu Formation is a Mesozoic geologic formation in the Iren Nor region of Inner Mongolia. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.The Upper Cretaceous Iren Dabasu Formation in the Iren Nor region of Inner Mongolia is typically referred to continental clastic sediments consisting of light grey fine sandstones, coarse sandstones and glutenites as well as mottled claystones and siltstones.".
- Iren_Dabasu_Formation label "Iren Dabasu Formation".
- Iren_Dabasu_Formation sameAs m.0bmcmhp.
- Iren_Dabasu_Formation sameAs Q17082076.
- Iren_Dabasu_Formation sameAs Q17082076.
- Iren_Dabasu_Formation sameAs Iren_Dabasu_Formation.
- Iren_Dabasu_Formation wasDerivedFrom Iren_Dabasu_Formation?oldid=549607686.
- Iren_Dabasu_Formation depiction Bactrosaurus.JPG.
- Iren_Dabasu_Formation isPrimaryTopicOf Iren_Dabasu_Formation.