Breadcrumb Home Search Showing results for Language Content type Article (10) Photo (9) Slideshow (3) Lesson Plan (1) Video (1) Article Type Article (5) Personal Perspectives (3) Topics (-) Ancient Seas (24) Extinctions (9) At The Museum (8) Sharks & Rays (8) Marine Mammals (5) Evolution (4) Exploration (3) Through Time (3) Extinctions (2) Reptiles (2) Careers (1) History & Cultures (1) Human Connections (1) Tags Fossils (11) Paleobiology (11) Ancient sea life (8) National Museum of Natural History (8) Smithsonian scientists (7) Whales (6) Geologic periods (4) Scientific illustrations (4) Sharks (4) Smithsonian collections (3) Smithsonian Tropical Research Institute (3) Adaptations (2) Geology (2) New discoveries (2) Scientists at work (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Slideshow Shark Ancestors December 2009 See the Full Slideshow Photo Squalicorax Shark Fossil August 2014 View Image Article Shark Teeth Tell Great White Shark Evolution Story November 2012 Read the Full Article Photo Ancient Giant Megatooth Shark January 2010 View Image Lesson Plan The Puzzle of Ice Age Americans December 2009 Read the Full Overview Article What the Megalodon Left Behind July 2018 Read the Full Article Photo The Ancient Shark Falcatus falcatus August 2014 View Image Article Form Equals Function for Ancient Sea Lizards and Modern Whales April 2019 Read the Full Article Photo Bite Marks From the Past July 2018 View Image Photo Illustration of Helicoprion January 2010 View Image Photo A Tooth Left Behind July 2018 View Image Photo A Mississippian Marine Habitat (359 - 318 Million Years Ago) September 2011 View Image Pagination Current page 1 Page 2 Next page
