Berta, A.; Churchill, M.; Boessenecker, R.W. (2018). «The Origin and Evolutionary Biology of Pinnipeds: Seals, Sea Lions, and Walruses». Annual Review of Earth and Planetary Sciences46: 203-228. Bibcode:2018AREPS..46..203B. doi:10.1146/annurev-earth-082517-010009.
Paterson, R. S.; Rybczynski, N.; Kohno, N.; Maddin, H. C. (2020). «Pinniped taxonomy: review of currently recognized species and subspecies, and evidence used for their description.». Frontiers in Ecology and Evolution7 (457). doi:10.3389/fevo.2019.00457.
handle.net
hdl.handle.net
Mitchell, E.; Tedford, R. H. (1973). «The Enaliarctinae: a new group of extinct aquatic Carnivora and a consideration of the origin of the Otariidae.». Bulletin of the AMNH151 (3). hdl:2246/1178.
harvard.edu
adsabs.harvard.edu
Berta, A.; Churchill, M.; Boessenecker, R.W. (2018). «The Origin and Evolutionary Biology of Pinnipeds: Seals, Sea Lions, and Walruses». Annual Review of Earth and Planetary Sciences46: 203-228. Bibcode:2018AREPS..46..203B. doi:10.1146/annurev-earth-082517-010009.