Breadcrumb Home Search Showing results for Language Content type Photo (3) Article (2) Slideshow (2) Video (1) Article Type Personal Perspectives (2) Topics (-) Ancient Seas (8) (-) Evolution (8) Extinctions (3) Marine Mammals (3) At The Museum (2) Extinctions (1) Tags Paleobiology (5) Adaptations (4) Ancient sea life (4) Whales (4) Fossils (3) National Museum of Natural History (3) Geologic periods (2) Scientific illustrations (2) Scientists at work (2) Smithsonian scientists (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Video Evolution of Whales Animation September 2009 Watch the Video Article Excavating a "toothed" baleen whale from Vancouver Island May 2012 Read the Full Article Photo Early Whale with Webbed Feet October 2016 View Image Photo Cambrian Period (542 – 488 Million Years Ago) September 2011 View Image Photo Multispecies Communities of Seacows January 2012 View Image 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 Article Dispatches from the Field: Treacherous stream crossings and a new fossil find May 2012 Read the Full Article