Laurasiatheria: References

Arnason, U., J. A. Adegoke, K. Bodin, E. W. Born, Y. B. Esa, A. Gullberg, M. Nilsson, R. V. Short, X. Xu & A. Janke. 2002. Mammalian mitogenomic relationships and the root of the eutherian tree. Proceedings of the National Academy of Sciences of the USA 99 (12): 8151-8156.
Ferungulata

Asher, R. J., M. J. Novacek & J. H. Geisler. 2003. Relationships of endemic African mammals and their fossil relatives based on morphological and molecular evidence. Journal of Mammalian Evolution 10 (1-2): 131-194.
Ferungulata

Shoshani, J & MC McKenna (1998), Higher taxonomic relationships among extant mammals based on morphology, with selected comparisons of results from molecular data. Mol. Phylog. & Evol. 9: 572-584.
Eparctocyona, Ungulata

Thewissen, J. G. M. 1990. Evolution of Paleocene and Eocene Phenacodontidae (Mammalia, Condylarthra). Museum of Paleontology, The University of Michigan, Papers on Paleontology 29: 1-107.
Phenacodontidae

Wible, J. R., G. W. Rougier, M. J. Novacek & R. J. Asher. 2007. Cretaceous eutherians and Laurasian origin for placental mammals near the K/T boundary. Nature 447: 1003-1006. pdf
Laurasiatheria

Wible, J. R., G. W. Rougier, M. J. Novacek, and R. J. Asher. 2009. The eutherian mammal Maelestes gobiensis from the Late Cretaceous of Mongolia and the phylogeny of Cretaceous Eutheria. Bulletin of the American Museum of Natural History, 327: 1-123. pdf
Laurasiatheria

Zack, SP (2004), An Early Eocene arctostylopid (Mammalia: Arctostylopida) from the Green River Basin, Wyoming. J. Vert. Paleontol. 24: 498:501.
Arctostylopida.

Zack, SP, TA Penkrot, JI Bloch & KD Rose (2005), Affinities of 'hyopsodontids' to elephant shrews and a Holarctic origin of Afrotheria. Nature 434: 497-501.
Hyopsodontidae.