1. Adams, G. I. (1908): An outline review of the geology of Peru. - Smithsonian Institution, Ann. rep., 385–429, Washington.
2. Barnes, L. G. (1972): Late Tertiary Cetacea of the Northeast Pacific ocean. - Ph. D. Dissertation, Univ. California, v + 494 p., Berkeley.
3. —, (1973): Pliocene cetaceans of the San Diego Formation, San Diego, California, 37–43. In: Studies on the geology and geologic hazards of the greater San Diego area, California,A. Ross &R. J. Dowlen Eds, San Diego Assoc. Geol., San Diego.
4. —, (1976): Outline of eastern North Pacific fossil cetacean assemblages. -Syst. Zool.,25, (4), 321–343, Lawrence, Kansas.
5. —, (1978): A review ofLophocetus andLiolithax and their relationships to the Delphinoid family Kentriodontidae (Cetacea: Odontoceti). - Sci. Bull. Nat. Hist. Mus.,27, 1–35, Los Angeles.