• Caldwell DK, Caldwell MC (1989) Pygmy sperm whale Kogia breviceps (de Blainville, 1838): Dwarf sperm whale Kogia simus Owen, 1866. In Handbook of Marine Mammals (eds RidgwaySH, HarrisonR), pp. 235260. San Diego: Academic Press.
  • Gingerich PD, Ul Haq M, Zalmout IS, Khan IH, Sadiq M (2001) Origin of whales from early artiodactyls: hands and feet of Eocene Protocetidae from Pakistan. Science 293, 22392242.
  • Glezer II, Jacobs M, Morgane P (1988) Implications of the ‘initial brain’ concept for brain evolution in Cetacea. Beh. Brain Sci. 11, 75116.
  • Kojima T (1951) On the brain of the sperm whale (Physeter catadon L.). Scientific Report Whales Res. Inst Tokyo 6, 4972.
  • Manger P, Sum M, Szymanski M, Ridgway S, Krubitzer L (1998) Modular subdivisions of dolphin insular cortex: does evolutionary history repeat itself? J. Cog. Neuro. 10, 153166.
  • Marino L (1998) A comparison of encephalization levels between adult Anthropoid Primates and Odontocetes (toothed whales). Brain Beh. Evol. 51, 230238.
  • Marino L, Murphy TL, DeWeerd AL, Morris JA, Ridgway SH, Fobbs AJ, et al. (2001a) Anatomy and three-dimensional reconstructions of the brain of a white whale (Delphinapterus leucas) from magnetic resonance images (MRI). Anat. Rec. 262, 429439.
  • Marino L, Murphy TL, Gozal L, Johnson JI (2001b) Magnetic resonance imaging and three-dimensional reconstructions of the brain of the fetal common dolphin, Delphinus delphis. Anat. Embryol. 203, 393402.
  • Marino L, Sudheimer K, Murphy TL, Davis KK, Pabst DA, McLellan W, et al. (2001c) Anatomy and three-dimensional reconstructions of the bottlenose dolphin (Tursiops truncatus) brain from magnetic resonance images. Anat. Rec. 264, 397414.
  • Marino L, Sudheimer K, Pabst DA, McLellan WA, Filsoof D, Johnson JI (2002) Neuroanatomy of the common dolphin (Delphinus delphis) as revealed by magnetic resonance images (MRI). Anat. Rec. 268, 411429.
  • Marino L, Sudheimer K, Sarko D, Sirpenski G, Johnson JI (2003) Neuroanatomy of the harbor porpoise (Phocoena phocoena) from magnetic resonance images. J. Morph. 257, 308347.
  • Morgane PJ, Jacobs MS, MacFarland WL (1980) The anatomy of the brain of the Bottlenose Dolphin (Tursiops truncatus). Surface configurations of the telencephalon of the Bottlenose Dolphin with comparative anatomical observations in four other cetacean species. Brain Res. Bull. 5 (Suppl. 3), 1107.
  • Oelschlager HHA, Kemp B (1998) Ontogenesis of the sperm whale brain. J. Comp. Neur. 399, 210228.
  • Oelschlager HHA, Oelschlager JS (2002) Brain. In Encyclopedia of Marine Mammals (eds PerrinWF, WursigB, ThewissenJGM), pp. 133158. San Diego: Academic Press.
  • Pilleri G, Gihr M (1970) The central nervous system of the mysticete and odontocete whales. Invest. Cet. 2, 87135.
  • Ridgway SH, Brownson RH (1984) Relative brain sizes and cortical surface areas in odontocetes. Acta Zoo. Fenn. 172, 149152.
  • Ridgway SH (1986) The central nervous system of the bottlenose dolphin. In Dolphin Cognition and Behavior: a Comparative Approach (eds SchustermanRJ, ThomasJA, WoodFG), pp. 3160. New Jersey: Lawrence Erlbaum Associates.
  • Stephan H, Frahm H, Baron G (1981) New and revised data on volumes of brain structures in insectivores and primates. Fol. Primatol. 25, 129.
  • Thewissen JGM, Williams EM, Roe LJ, Hussain ST (2001) Skeletons of terrestrial cetaceans and the relationship of whales to artiodactyls. Nature 413, 277281.