... longitudinally and latitudinally. Latitudinal temperature gradients were not as strong as today. In the Eocene, for example, Antarctica had a temperate climate and a fish fauna that included families ... Santa Cruz, California 95060 Jonathan A. Hare (243), National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal ... genera and subgenera of Ferry-Graham et al. (2001b) and the habitat and depth data of Allen (1979), an interesting pattern emerges. The basal taxa live predominantly in deep water (at least...