Reference
Gudrun Daxner-Höck [Daxner], Demchig Badamgarav (2007): 1. Geological and stratigraphic setting. In: Daxner-Höck, Gudrun ed. Oligocene-Miocene Vertebrates from the Valley of Lakes (Central Mongolia): Morphology, phylogenetic and stratigraphic implications – Annalen des Naturhistorischen Museums in Wien – 108A: 1 - 24.