Breadcrumb Home Search Showing results for Language Content type Article (9) Photo (8) Slideshow (5) Lesson Plan (2) Audio (1) Overview (1) Article Type Personal Perspectives (4) Article (3) Topics (-) Ancient Seas (26) Extinctions (9) Marine Mammals (7) At The Museum (6) Extinctions (4) Climate Change (3) Invertebrates (3) Evolution (2) Careers (1) Deep Sea (1) Exploration (1) Fish (1) History & Cultures (1) Ice (1) Microbes (1) Plankton (1) Plants & Algae (1) Recreation (1) Reptiles (1) Sharks & Rays (1) Temperature & Chemistry (1) The Anthropocene (1) The Seafloor (1) Tags Paleobiology (13) Fossils (11) Geologic periods (8) Scientific illustrations (7) Smithsonian scientists (7) Ancient sea life (6) Mussels, Oysters & Relatives (5) Whales (5) National Museum of Natural History (4) Scientists at work (4) Adaptations (2) Climate Change (2) Corals (2) Feeding (2) Manatees & Dugongs (2) Technology (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Overview Sea Level Rise April 2016 Read the Full Overview Slideshow A Squalodontid Success June 2011 See the Full Slideshow Pagination Previous page Page 1 Page 2 Current page 3