Eizirik, E.; Murphy, W.J.; Koepfli, K.P.; Johnson, W.E.; Dragoo, J.W.; O'Brien, S.J. (2010). “Pattern and timing of the diversification of the mammalian order Carnivora inferred from multiple nuclear gene sequences”. 《Molecular Phylogenetics and Evolution》 56: 49–63. doi:10.1016/j.ympev.2010.01.033. PMID20138220.
Berta, A.; Churchill, M. (2012). “Pinniped taxonomy: Review of currently recognized species and subspecies, and evidence used for their description”. 《Mammal Review》 42 (3): 207–34. doi:10.1111/j.1365-2907.2011.00193.x.
nih.gov
ncbi.nlm.nih.gov
Eizirik, E.; Murphy, W.J.; Koepfli, K.P.; Johnson, W.E.; Dragoo, J.W.; O'Brien, S.J. (2010). “Pattern and timing of the diversification of the mammalian order Carnivora inferred from multiple nuclear gene sequences”. 《Molecular Phylogenetics and Evolution》 56: 49–63. doi:10.1016/j.ympev.2010.01.033. PMID20138220.
