Breadcrumb Home Search Showing results for Language Content type Article (2) Slideshow (1) Article Type Article (1) Personal Perspectives (1) Topics (-) Extinctions (3) (-) Marine Mammals (3) Ancient Seas (2) At The Museum (2) Extinctions (2) Invertebrates (1) Plants & Algae (1) Tags Whales (3) Ancient sea life (2) Endangered species (2) Fossils (2) Seagrass (2) Smithsonian scientists (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Slideshow Endangered Ocean Animals December 2013 See the Full Slideshow Article Whale fossils on the mainland, and into a CT scanner May 2012 Read the Full Article Article Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows August 2016 Read the Full Article