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 Wiwaxia August 2013 View Image Photo Hallucigenia August 2013 View Image Photo Petrel Bones Help Us Understand History May 2013 View Image Photo Dugong Feeding February 2012 View Image Photo Cretaceous-Paleogene Boundary (65 Million Years Ago) September 2011 View Image Photo A Mississippian Marine Habitat (359 - 318 Million Years Ago) September 2011 View Image Photo Cambrian Period (542 – 488 Million Years Ago) September 2011 View Image 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 Ammonite January 2010 View Image Photo Rudist Clams January 2010 View Image Photo Ancient Entoproct Community August 2015 View Image Pagination Previous page Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Current page 7 Page 8 Next page