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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Cladus: Synapsida
Cladus: Eupelycosauria
Cladus: Sphenacodontia
Cladus: Sphenacodontoidea
Cladus: Therapsida
Cladus: Theriodontia
Cladus: Cynodontia
Cladus: Eucynodontia
Cladus: Probainognathia
Cladus: Prozostrodontia
Cladus: Mammaliaformes
Classis: Mammalia
Subclassis: Trechnotheria
Infraclassis: †Allotheria
Ordo: †Multituberculata
Subordo: †Plagiaulacida

Familia: †Eobaataridae
Genus: †Eobaatar
Species: †E. hispanicus – †E. magnus – †E. minor
Name

Eobaatar Kielan-Jaworowska, Dashzeveg & Trofimov, 1987: 7

Type species: Eobaatar magnus [Kielan-Jaworowska et al., 1987: 7]

Etymology: "Gr[eek]. eos — dawn, Mong[olian]. baatar — hero" [Kielan-Jaworowska et al., 1987: 7]
References
Primary references

Kielan-Jaworowska, Z., Dashzeveg, D. & Trofimov, B.A. 1987. Early Cretaceous multituberculates from Mongolia and a comparison with Late Jurassic forms. Acta Palaeontologica Polonica 32(1-2): 3–47. PDF Reference page.

Eobaatar is a genus of extinct mammal from the Lower Cretaceous of Mongolia, Spain and England. A member of the also extinct order Multituberculata, it lies within the suborder Plagiaulacida and family Eobaataridae. The genus Eobaatar was named by Kielan-Jaworowska Z., Dashzeveg D. and Trofimov B.A. in 1987. Its name was made from Greek "eos" = "dawn" and Mongolian "baatar" = "hero"", "warrior".
Species
Eobaatar hispanicus

This species was named by Hahn G. and Hahn R. in 1992. Remains consisting of a single tooth were found in Hauterivian - Barremian (Lower Cretaceous)-age strata of the Camarillas Formation, Spain.
Eobaatar magnus

This species was named by Kielan-Jaworowska Z., Dashzeveg D. and Trofimov B.A. in 1987. It is based on a fragment of lower jaw with teeth found in Aptian or Albian (Lower Cretaceous) strata of the Dzunbain Formation in Guchin Us County, Mongolia, and had a cranial length of about 3 cm.
Eobaatar minor

This species was also named by Kielan-Jaworowska Z., Dashzeveg D. and Trofimov B.A. in 1987. Remains were found in Lower Cretaceous Dzunbain Formation of Mongolia. Going by the species name, it was probably relatively small; his skull was 2 cm in length indeed.
Eobaatar pajaronensis

This species was named by Hahn G. and Hahn R. in 2001. Remains were discovered in Barremian (Lower Cretaceous) strata of the Camarillas Formation in Spain.
Eobaatar clemensi

This species was named by Steven Sweetman in 2009. Remains were found in the Barremian (lower Cretaceous) of the Wessex formation, England.
Sources

Zofia Kielan-Jaworowska, Richard L. Cifelli, and Zhe-Xi Luo (2004). "Mammals from the age of dinosaurs : origins, evolution, and structure" pp. 260–342. ISBN 0-231-11918-6
Hahn & Hahn (2001), "Multituberculaten-zähne aus der Unter-Kreide (Barremium) von Ple Pajaron (Prov. Cuenca, Spanien)". Paläontologische Zeitschrift 74 (4), p. 587-589.
Kielan-Jaworowska et al. (1987), "Early Cretaceous multituberculates from Mongolia and a comparison with Late Jurassic form". Acta Palaeontologica Polonica 32, p. 3-47.
Kielan-Jaworowska Z & Hurum JH (2001), "Phylogeny and Systematics of multituberculate mammals". Paleontology 44, p. 389-429.
Much of this information has been derived from MESOZOIC MAMMALS: Plagiaulacidae, Albionbaataridae, Eobaataridae & Arginbaataridae
S. C. Sweetman. 2009. A new species of the plagiaulacoid multituberculate mammal Eobaatar from the Early Cretaceous of southern Britain. Acta Palaeontologica Polonica 54(3):373-384

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