Bulganbaatar

Bulganbaatar Temporal range: Late Cretaceous
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	† Multituberculata
Superfamily:	† Djadochtatherioidea
Genus:	† Bulganbaatar Zofia Kielan-Jaworowska, 1974
Species
†B.nemegtbaataroides

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. ^[1] 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. ^[2] 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." ^[3]

Fossil remains of Bulganbaatar have been found in Upper Cretaceous-aged strata of the Djadokhta Formation of Mongolia and Kazakhstan. ^{[4] [5]} Their appearances range between 84 and 81 million years ago, from the late Santonian to the early Campanian ages. ^{[6] [7]}

Notes

1. Kielan-Jaworowska, 1974 p 31
2. Kielan-Jaworowska 1974, p 26, 37
3. Kielan-Jaworowska and Hurum, 2001, p 390
4. Averianov 1997
5. Kielan-Jaworowska, 1974 p 31
6. Wilson et al 2012, Supplemental Table 3
7. Kielan-Jaworowska, 1974 p 31

References

• Averianov, A.O. (1997). "New Late Cretaceous mammals of southern Kazakhstan". Acta Palaeontologica Polonica. 42 (2): 243–256.

• Dykes, Trevor. "Mesozoic Mammals; Djadochtatherioidea, an internet directory". Archived from the original on 21 April 2003.

• Kielan-Jaworowska, Zofia (1974). "Multituberculate succession in the Late Cretaceous of the Gobi Desert (Mongolia)". Palaeontologica Polonica. 30: 23–44.
• Kielan-Jaworowska, Zofia; Hurum, J.H. (2001). "Phylogeny and Systematics of Multituberculate Mammals" (PDF). Palaeontology. 44 (3): 389–429. doi:10.1111/1475-4983.00185.
• Wilson, Gregory P.; Evans, Alistair R.; Corfe, Ian J.; Smits, Peter D.; Fortelius, Mikael; Jernvall, Jukka (2012). "Adaptive radiation of multituberculate mammals before the extinction of dinosaurs". Nature. 483: 457–460. doi:10.1038/nature10880.