Breadcrumb Home Search Showing results for Language Content type Photo (46) Article (23) Video (8) Slideshow (6) Lesson Plan (3) Audio (1) Overview (1) Article Type Personal Perspectives (10) Article (9) Topics (-) Ancient Seas (88) Extinctions (33) At The Museum (17) Marine Mammals (17) Evolution (15) Climate Change (10) Extinctions (8) Sharks & Rays (8) Invertebrates (7) Exploration (4) Temperature & Chemistry (4) The Anthropocene (4) History & Cultures (3) Shifting Baselines (3) The Seafloor (3) Through Time (3) Careers (2) Deep Sea (2) Fishing (2) Ice (2) Plants & Algae (2) Reptiles (2) Seabirds (2) Coral Reefs (1) Fish (1) Food Web (1) Human Connections (1) Microbes (1) Plankton (1) Poles (1) Recreation (1) Seafood (1) Technology (1) Tags Paleobiology (33) Fossils (27) Smithsonian scientists (20) Ancient sea life (18) Whales (17) National Museum of Natural History (14) Scientific illustrations (14) Geologic periods (9) Scientists at work (8) Adaptations (7) Mussels, Oysters & Relatives (7) Climate Change (5) Geology (5) New discoveries (5) Under the microscope (5) Corals (4) Feeding (4) Sharks (4) Smithsonian collections (4) Smithsonian Tropical Research Institute (4) Chemistry (3) Manatees & Dugongs (3) News (3) Shifting Baselines (3) Technology (3) Algae (2) Arctic (2) Dolphins & Porpoises (2) Endangered species (2) Fisheries (2) Ice (2) Maritime history (2) Native people (2) NOAA (2) Research vessels (2) Seagrass (2) Women in Science (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Slideshow Foraminifera March 2010 See the Full Slideshow Photo Hantkenina mexicana March 2010 View Image Slideshow Shark Ancestors December 2009 See the Full Slideshow Slideshow Rudist Reefs December 2009 See the Full Slideshow Photo Anomalocaris canadensis August 2013 View Image Photo Recliner Rudists November 2016 View Image Photo Giant Megatooth Model January 2010 View Image Lesson Plan The Methane Circus November 2009 Read the Full Overview Photo Ancient Giant Megatooth Shark January 2010 View Image Photo Elevator Rudists January 2018 View Image Photo Ammonite January 2010 View Image Slideshow A Collection of Cambrian Fossils October 2013 See the Full Slideshow Pagination Current page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Next page