Ekdale, E.G., Berta, A. and Deméré, T.A. 2011. The comparative osteology of the petrotympanic complex (ear region) of extant baleen whales (Cetacea: Mysticeti). PLoS ONE. Vol. 6, p. e21311.
El Adli, J. J., Deméré, T. A. and Boessenecker, R. W. 2014. Herpetocetus morrowi (Cetacea: Mysticeti), a new species of diminutive baleen whale from the Upper Pliocene (Piacenzian) of California, USA, with observations on the evolution and relationships of the Cetotheriidae. Zoological Journal of the Linnean Society. Vol. 170, pp. 400-466.
Emlong, D. R. 1966. A new archaic cetacean from the Oligocene of northwest Oregon. Bulletin of the Museum of Natural History, University of Oregon. Vol. 3, pp. 1-51.
Eschricht, D. F and Reinhardt, J. 1866. On the Greenland right whale (Balaena mysticetus). Recent Memoirs on the Cetacea. in Flower, W. H. ed. Ray Society, London.
Excavation Research Group for the Fukagawa Whale Fossil. 1982. Research report on the Pliocene Balaenula (Suborder Mysticoceti (sic)) collected from Fukagawa City, Hokkaido. Board of Education, Fukagawa City, Hokkaido, Japan.