Djadochtatherioidea
Scientific classification
Kingdom: Animalia
Therapsida
Class: Mammalia
Order: Multituberculata
Superfamily: Djadochtatherioidea
Families
  Sloanbaataridae
  Djadochtatheriidae
  Other genera
  Bulganbaatar
  Chulsanbaatar
  Nemegtbaatar
Ref.

Djadochtatherioidea is a group of extinct mammals known from the Upper Cretaceous of Central Asia. They were members of an also extinct order called Multituberculata. These were generally small, somewhat rodent-like creatures, who scurried around during 'the age of the dinosaurs'.
Unusually for multituberculates, some of this group are represented by very good remains. All Upper Cretaceous Mongolian multis are included with one exception, Buginbaatar. This superfamily is further subdivided into two families and several other genera, as listed in the table.
For the technically minded, these djadochs are within the suborder of Cimolodonta. Djadochtatherioidea was established by Kielan-Jaworowska and Hurum, 2001, as a replacement for the previously proposed Djadochtatheria Kielan-Jaworowska & Hurum, 1997.

Page reference: Kielan-Jaworowska Z & Hurum JH (2001), Phylogeny and Systematics of multituberculate mammals. Paleontology 44, p.389-429.

(This information has been derived from [1] MESOZOIC MAMMALS; Djadochtatherioidea, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)