Ruta de navegación Inicio Search Showing results for Language Content type Photo (4) Video (3) Artículo (2) Slideshow (2) Article Type Article (1) Personal Perspectives (1) Topics (-) Extinctions (11) Ancient Seas (8) Marine Mammals (4) At The Museum (2) Evolution (2) Extinctions (2) Conservation (1) Exploration (1) Habitat Destruction (1) Invertebrates (1) Plants & Algae (1) Sharks & Rays (1) Tags Scientific illustrations (4) Whales (4) Endangered species (3) Fossils (3) Paleobiology (3) Smithsonian scientists (3) Ancient sea life (2) Mussels, Oysters & Relatives (2) National Museum of Natural History (2) Seagrass (2) Seals & Sea Lions (2) Site Search Sort by RelevanceTitle SortAuthored on Ordenar AscDesc Sort By RelevanceA-ZZ-ANewestOldest Slideshow The Ocean Throughout Geologic Time, An Image Gallery Septiembre 2011 See the Full Slideshow Video Are Sharks Scary? Diciembre 2009 Watch the Video Video Efforts to Protect the Critically Endangered Monk Seal Junio 2011 Watch the Video Slideshow Endangered Ocean Animals Diciembre 2013 See the Full Slideshow Photo Cretaceous-Paleogene Boundary (65 Million Years Ago) Septiembre 2011 View Image Photo Elevator Rudists Enero 2018 View Image Photo Carbonate Reef (Cretaceous Period: 145 - 65 Million Years Ago) Diciembre 2009 View Image Photo Ammonite Enero 2010 View Image Artículo Whale fossils on the mainland, and into a CT scanner Mayo 2012 Read the Full Article Video Excavating an Extinct Toothed Whale Junio 2011 Watch the Video Artículo Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows Agosto 2016 Read the Full Article