Eobaataridae

Eobaataridae is a family of fossil mammals within the order Multituberculata. Remains are known from the Lower Cretaceous of Europe and Asia, and perhaps the Jurassic of North America. These herbivores thus lived during the 'age of the dinosaurs'.
For the technically minded, they were amongst the most derived representatives of the informal suborder of "Plagiaulacida".

Taxon: Eobaataridae Kielan-Jaworowska Z, Dashzeveg D & Trofimov BA, 1987
Remarks: In this case of one taxon, remains are reasonably well known. This refers to Sinobaatar from the extraordinary Chinese locality of Liaoning. They were close relavtives of the Plagiaulacidae, whilst the second upper molar has similarities to ones known from the informal Paracimexomys group within the more derived suborder, Cimolodonta.
Reference: Kielan-Jaworowska, Dashzeveg & Trofimov (1987), Early Cretaceous multituberculates from Mongolia and a comparison with Late Jurassic forms. Acta Palaeontologica Polonica, 32, p.3-47.

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] (http://home.arcor.de/ktdykes/basmult.htm) MESOZOIC MAMMALS; Plagiaulacidae, Albionbaataridae, Eobaataridae & Arginbaataridae, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)