Bulganbaatar is an extinct genus of early mammals from the Upper Cretaceous.
It is a member of the extinct order Multituberculata. It lies within the suborder Cimolodonta and is a member of the superfamily Djadochtatherioidea. The genus Bulganbaatar was named by Zofia Kielan-Jaworowska in 1974 after the village of Bulgan situated near Bayn Dzak.Kielan-Jaworowska, 1974 p 31 It is one of many Cretaceous aged mammal discoveries made by Kielan-Jaworowska and co-workers from Central Asian sites. Kielan-Jaworowska considered B.nemegtbaatorides to be the ancestor to the genus Nemegtbaatar due to similarity but more derived teeth in the latter, hence the names.Kielan-Jaworowska 1974, p 26, 37 According to Kielan-Jaworowska and Hurum, both Bulganbaatar and Nemegtbaatar are distinctive for exhibiting "elongation of the last upper premolar and molars, and an increase in their cusp numbers."Kielan-Jaworowska and Hurum, 2001, p 390
Fossil remains of Bulganbaatar have been found in Upper Cretaceous-aged strata of the Djadokhta Formation of Mongolia and Kazakhstan.Averianov 1997Kielan-Jaworowska, 1974 p 31 Their appearances range between 84 and 81 million years ago, from the late Santonian to the early Campanian ages.Wilson et al 2012, Supplemental Table 3Kielan-Jaworowska, 1974 p 31
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