Breadcrumb Home Search Showing results for Language Content type Article (4) Photo (2) Slideshow (2) Article Type Article (3) Personal Perspectives (1) Topics (-) Ancient Seas (8) (-) Evolution (8) At The Museum (4) Extinctions (2) Marine Mammals (2) Through Time (2) Exploration (1) Extinctions (1) Human Connections (1) Reptiles (1) Tags Fossils (5) Ancient sea life (4) Adaptations (3) Geologic periods (3) National Museum of Natural History (3) Paleobiology (3) Whales (3) Scientific illustrations (2) Smithsonian scientists (2) Site Search Sort by RelevanceTitle SortAuthored on Order AscDesc Sort By RelevanceA-ZZ-ANewestOldest Article Keeping An Ear Out For Whale Evolution March 2015 Read the Full Article Article If You Build An Ocean, Sea Monsters Will Come October 2018 Read the Full Article Article Meals of the Mighty Mosasaur November 2018 Read the Full Article Slideshow The Ocean Throughout Geologic Time, An Image Gallery September 2011 See the Full Slideshow Photo Early Whale with Webbed Feet October 2016 View Image Article Excavating a "toothed" baleen whale from Vancouver Island May 2012 Read the Full Article Slideshow A Collection of Cambrian Fossils October 2013 See the Full Slideshow Photo Cambrian Period (542 – 488 Million Years Ago) September 2011 View Image