Breadcrumb Home Search Showing results for Language Content type Photo (25) Article (13) Slideshow (3) Article Type Personal Perspectives (7) Article (3) Topics (-) Extinctions (41) Ancient Seas (25) Marine Mammals (14) At The Museum (12) Evolution (4) Sharks & Rays (4) Extinctions (2) History & Cultures (2) Plants & Algae (2) Temperature & Chemistry (2) Careers (1) Climate Change (1) Exploration (1) Fishing (1) Invertebrates (1) Technology (1) The Seafloor (1) Tags Paleobiology (26) Smithsonian scientists (22) Whales (19) Fossils (16) Ancient sea life (11) National Museum of Natural History (9) Smithsonian collections (9) Scientists at work (8) Behind-the-scenes (4) Geology (4) New discoveries (4) Adaptations (3) Geologic periods (3) News (3) Smithsonian Tropical Research Institute (3) Maritime history (2) Technology (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Photo Dislodging the Fossil June 2011 View Image Photo Securing the Fossil June 2011 View Image Photo Fish Skeleton Discovery June 2011 View Image Article Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows August 2016 Read the Full Article Slideshow Shark Ancestors December 2009 See the Full Slideshow Pagination Previous page Page 1 Page 2 Page 3 Current page 4