Breadcrumb Home Search Showing results for Language Content type Article (6) Photo (6) Slideshow (2) Video (1) Article Type Article (3) Personal Perspectives (2) Topics (-) Ancient Seas (15) (-) Evolution (15) At The Museum (5) Extinctions (4) Marine Mammals (4) Extinctions (2) Through Time (2) Exploration (1) Human Connections (1) Invertebrates (1) Reptiles (1) Sharks & Rays (1) Tags Paleobiology (9) Ancient sea life (7) Fossils (7) Adaptations (5) National Museum of Natural History (5) Whales (5) Feeding (3) Geologic periods (3) Smithsonian scientists (3) Scientific illustrations (2) Scientists at work (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Slideshow A Collection of Cambrian Fossils October 2013 See the Full Slideshow Slideshow The Ocean Throughout Geologic Time, An Image Gallery September 2011 See the Full Slideshow Photo Elevator Rudists January 2018 View Image Photo Cambrian Period (542 – 488 Million Years Ago) September 2011 View Image Video Evolution of Whales Animation September 2009 Watch the Video Photo Ancient Entoproct Community August 2015 View Image Photo The First Filter Feeder August 2015 View Image Photo Early Whale with Webbed Feet October 2016 View Image Photo Multispecies Communities of Seacows January 2012 View Image Article Keeping An Ear Out For Whale Evolution March 2015 Read the Full Article Article Dispatches from the Field: Treacherous stream crossings and a new fossil find May 2012 Read the Full Article Article Excavating a "toothed" baleen whale from Vancouver Island May 2012 Read the Full Article Pagination Current page 1 Page 2 Next page