Breadcrumb Home Search Showing results for Language Content type Photo (34) Article (22) Slideshow (6) Video (2) Audio (1) Lesson Plan (1) Overview (1) Article Type Personal Perspectives (10) Article (9) Topics (-) Ancient Seas (67) Extinctions (27) At The Museum (16) Marine Mammals (16) Evolution (13) Extinctions (8) Sharks & Rays (7) Climate Change (6) Invertebrates (5) Exploration (3) The Anthropocene (3) Through Time (3) Careers (2) Plants & Algae (2) Reptiles (2) Seabirds (2) Shifting Baselines (2) Temperature & Chemistry (2) Coral Reefs (1) Deep Sea (1) Fish (1) Fishing (1) Food Web (1) History & Cultures (1) Human Connections (1) Ice (1) Microbes (1) Plankton (1) Recreation (1) Seafood (1) The Seafloor (1) Tags Paleobiology (29) Fossils (24) Smithsonian scientists (18) Ancient sea life (17) Whales (15) Scientific illustrations (14) National Museum of Natural History (13) Geologic periods (9) Scientists at work (8) Adaptations (7) Mussels, Oysters & Relatives (7) New discoveries (4) Sharks (4) Smithsonian collections (4) Smithsonian Tropical Research Institute (4) Corals (3) Feeding (3) Geology (3) Manatees & Dugongs (3) News (3) Under the microscope (3) Algae (2) Chemistry (2) Climate Change (2) Dolphins & Porpoises (2) Endangered species (2) Fisheries (2) Seagrass (2) Shifting Baselines (2) Technology (2) Women in Science (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Photo Ottoia prolifica August 2013 View Image Video Coral Reefs Changing Over Time August 2013 Watch the Video Photo Anomalocaris canadensis August 2013 View Image Photo Wiwaxia August 2013 View Image Photo Petrel Bones Help Us Understand History May 2013 View Image Photo Hantkenina mexicana March 2010 View Image Photo Eocene Whales and Penguins Off the Coast of Peru March 2018 View Image Pagination Previous page Page 1 Page 2 Page 3 Page 4 Page 5 Current page 6