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 Photo Recliner Rudists November 2016 View Image Photo Lenticulina secans March 2010 View Image Slideshow A Squalodontid Success June 2011 See the Full Slideshow Article Archaeologists Study Early Whaling Community in Quebec, Canada September 2011 Read the Full Article Article Dispatches from the Field: Treacherous stream crossings and a new fossil find May 2012 Read the Full Article Article Shark Teeth Tell Great White Shark Evolution Story November 2012 Read the Full Article Article Mystery of An Ichthyosaur Graveyard Revealed December 2022 Read the Full Article Photo Ediacaran Community, Proterozoic Eon (2,500 - 542 Million Years Ago) September 2011 View Image Photo The Archean Eon (4,600 – 2,500 Million Years Ago) September 2011 View Image Photo Cretaceous-Paleogene Boundary (65 Million Years Ago) September 2011 View Image Photo Cambrian Period (542 – 488 Million Years Ago) September 2011 View Image Photo Carbonate Reef (Cretaceous Period: 145 - 65 Million Years Ago) December 2009 View Image Pagination Previous page Page 1 Current page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Next page