Breadcrumb Home Search Showing results for Language Content type Photo (29) Article (4) Video (2) Overview (1) Article Type Article (4) Topics (-) Through Time (36) Ancient Seas (3) At The Museum (3) Careers (2) Climate Change (2) Evolution (2) Human Connections (2) Invertebrates (2) Exploration (1) Ice (1) Poles (1) Reptiles (1) Sharks & Rays (1) Temperature & Chemistry (1) Tags Ancient sea life (4) Fossils (4) Paleobiology (3) Smithsonian scientists (3) Apex predator (2) Arctic (2) Geologic periods (2) National Museum of Natural History (2) Sea stars & Urchins (2) Sharks (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Photo Carboniferous Snails April 2019 View Image Video Life in the Ediacaran April 2019 Watch the Video Photo Ammonoids April 2019 View Image Photo Sea Lilies April 2019 View Image Video Receding Ice Cover January 2011 Watch the Video Photo Ancient Crinoid April 2022 View Image Photo Blastoid Fossil April 2022 View Image Photo Global Conveyer Belt August 2013 View Image Photo Hedbergella sliteri March 2010 View Image Photo Kathy Crane with colleagues on ice March 2010 View Image Photo Equipment for a Fossil Excavation June 2011 View Image Article Bony Beginnings: The Rise of Vertebrate Innovation in the Devonian March 2025 Read the Full Article Pagination Previous page Page 1 Page 2 Current page 3