Breadcrumb Home Search Showing results for Language Content type Photo (14) Article (4) Overview (1) Video (1) Article Type Article (4) Topics (-) Through Time (20) 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 Precambrian Timeline May 2019 View Image Photo Paleozoic Timeline May 2019 View Image Photo Carboniferous Snails April 2019 View Image Photo The Lace Crab May 2019 View Image Photo Ammonoids April 2019 View Image Photo Ancient Crinoid April 2022 View Image Photo The Model Megalodon May 2019 View Image Photo Plesiosaur on the Hunt April 2019 View Image Pagination Previous page Page 1 Current page 2