Breadcrumb Home Search Showing results for Language Content type Article (23) Photo (12) Slideshow (4) Lesson Plan (3) Audio (1) Overview (1) Article Type Personal Perspectives (10) Article (9) Topics (-) Ancient Seas (44) Extinctions (18) At The Museum (17) Marine Mammals (15) Evolution (8) Climate Change (5) Extinctions (5) History & Cultures (3) Sharks & Rays (3) Through Time (3) Careers (2) Exploration (2) Fishing (2) Invertebrates (2) Plants & Algae (2) Reptiles (2) Temperature & Chemistry (2) The Anthropocene (2) Deep Sea (1) Fish (1) Food Web (1) Human Connections (1) Ice (1) Microbes (1) Plankton (1) Recreation (1) Seabirds (1) Seafood (1) Shifting Baselines (1) The Seafloor (1) Tags Fossils (23) Paleobiology (17) Ancient sea life (16) Smithsonian scientists (16) Whales (13) National Museum of Natural History (12) Geologic periods (8) Scientists at work (8) Adaptations (6) Scientific illustrations (5) New discoveries (4) Smithsonian collections (4) Manatees & Dugongs (3) News (3) Smithsonian Tropical Research Institute (3) Under the microscope (3) Chemistry (2) Climate Change (2) Dolphins & Porpoises (2) Feeding (2) Fisheries (2) Geology (2) Maritime history (2) Mussels, Oysters & Relatives (2) Native people (2) NOAA (2) Seagrass (2) Sharks (2) Technology (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 Article What the Megalodon Left Behind July 2018 Read the Full Article Article Unearthing History: Mary Anning's Hunt for Prehistoric Ocean Giants March 2016 Read the Full Article Article When Did Today’s Whales Get So Big? July 2016 Read the Full Article Article New Archaeocetes from Peru Are the Oldest Fossil Whales from South America September 2011 Read the Full Article Article Fossil Whale Found, Excavated, Jacketed, and Returned to STRI! June 2011 Read the Full Article Article Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows August 2016 Read the Full Article Photo Hallucigenia's Spikes April 2019 View Image Photo An Ichthyosaur Gravesite December 2022 View Image Photo Hantkenina mexicana March 2010 View Image Slideshow The Ocean Throughout Geologic Time, An Image Gallery September 2011 See the Full Slideshow Slideshow A Squalodontid Success June 2011 See the Full Slideshow Pagination Previous page Page 1 Page 2 Current page 3 Page 4 Next page