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Zhou, X. et al. (2011). Phylogenomic analysis resolves the interordinal relationships and rapid diversification of the Laurasiatherian mammals. Systematic Biology61 (1): 150–64. doi: https://doi.org/10.1093/sysbio/syr089. PMC 3243735. PMID 21900649. Retrieved 3 October 2011. (Advance Access; published online 7 September 2011)