Breadcrumb Home Search Showing results for Language Content type Photo (24) Article (21) Slideshow (6) Lesson Plan (3) Audio (1) Overview (1) Video (1) Article Type Personal Perspectives (9) Article (8) Topics (-) Ancient Seas (57) Extinctions (22) At The Museum (15) Marine Mammals (13) Evolution (12) Extinctions (6) Climate Change (5) Invertebrates (4) History & Cultures (3) Sharks & Rays (3) Temperature & Chemistry (3) Through Time (3) Careers (2) Exploration (2) Fishing (2) Reptiles (2) Seabirds (2) The Anthropocene (2) The Seafloor (2) Deep Sea (1) Fish (1) Food Web (1) Human Connections (1) Ice (1) Microbes (1) Plankton (1) Plants & Algae (1) Recreation (1) Seafood (1) Shifting Baselines (1) Tags Fossils (22) Paleobiology (19) Ancient sea life (16) Smithsonian scientists (15) National Museum of Natural History (11) Whales (11) Geologic periods (9) Scientific illustrations (7) Scientists at work (7) Adaptations (6) Mussels, Oysters & Relatives (5) Feeding (4) New discoveries (4) Manatees & Dugongs (3) News (3) Sharks (3) Smithsonian collections (3) Chemistry (2) Climate Change (2) Fisheries (2) Geology (2) Maritime history (2) Native people (2) NOAA (2) Seagrass (2) Smithsonian Tropical Research Institute (2) Technology (2) Women in Science (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Photo An Ichthyosaur's Bones April 2019 View Image Photo A Tooth Left Behind July 2018 View Image Slideshow The Ocean Throughout Geologic Time, An Image Gallery September 2011 See the Full Slideshow Photo An Ichthyosaur Gravesite December 2022 View Image Photo An Ichthyosaur Jaw Bone December 2022 View Image Video When Fish Wore Armor April 2019 Watch the Video Article Meals of the Mighty Mosasaur November 2018 Read the Full Article Article 4,000 Years of Marine History through the Eyes of a Seabird May 2013 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 An Extinct Mammal May Have Been Replaced By Today's Sea Cows August 2016 Read the Full Article Slideshow Shark Ancestors December 2009 See the Full Slideshow Article The Discovery of Multispecies Communities of Seacows January 2012 Read the Full Article Photo Hurdia Victoria August 2013 View Image Pagination Previous page Page 1 Page 2 Current page 3 Page 4 Page 5 Next page