Eobaatar
Scientific classification
Kingdom: Animalia
Therapsida
Class: Mammalia
Order: Multituberculata
Family: Eobaataridae
Genus: Eobaatar
Species
  E. hispanicus
  E. magnus
  E. minor
  E.? parjaronensis
Ref.

Eobaatar is an extinct mammal from the Lower Cretaceous of Mongolia and Spain. It was a member of the also extinct order of Multituberculata, and and lived at the same time as some dinosaurs.
(For the technically minded, suborder "Plagiaulacida", family Eobaataridae.)

Genus: Eobaatar Kielan-Jaworowska Z, Dashzeveg D & Trofimov BA, 1987
Reference: Kielan-Jaworowska et al (1987), Early Cretaceous multituberculates from Mongoloia and a comparison with Late Jurassic form. Acta Palaeontologica Polonica, 32, p.3-47.

Species: Eobaatar hispanicus Hahn & Hahn, 1992
Place: Galve
Country: Spain
Age: Hauterivian - Barremian, Lower Cretaceous
Remarks: Remains are restricted to a tooth.
Reference:

Species: Eobaatar magnus Kielan-Jaworowska Z, Dashzeveg D & Trofimov BA, 1987
Place: Khoboor beds, Guchin Us County
Country: Mongolia
Age: Aptian or Albian, Lower Cretaceous
Remarks: This species is based on a fragment of lower jaw with teeth.
Reference: Kielan-Jaworowska et al (1987), Early Cretaceous multituberculates from Mongoloia and a comparison with Late Jurassic form. Acta Palaeontologica Polonica, 32, p.3-47.

Species: Eobaatar minor Kielan-Jaworowska Z, Dashzeveg D & Trofimov BA, 1987
Place:
Country: Mongolia
Age: Lower Cretaceous
Remarks: Going by the species name, I imagine it was relatively small.
Reference:

Species: Eobaatar? parjaronensis Hahn G & Hahn R, 2001
Place: Ple pajaron
Country: Spain
Age: Barremian, Lower Cretaceous
Remarks:
Reference: Hahn & Hahn (2001), Multituberculaten-zähne aus der Unter-Kreide (Barremium) von Ple Pajaron (Prov. Cuenca, Spanien). Palaontologische Zeitschrift 74 ( 4), p.587-589.
(Multituberculate teeth from the Lower Cretaceous (Barremium) of Ple Pajaron (Prov. Cuenca, Spain)

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; Plagiaulacidae, Albionbaataridae, Eobaataridae & Arginbaataridae, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)