Search found 16 items
- (-) The Ocean Through Time
- Top Predators Timeline TIMELINE
Sep 24 2010 - 6:00pm
- The Ocean Throughout Geologic Time, An Image Gallery SLIDESHOW
Evidence shows that life probably began in the ocean at least 3.5 billion years ago. Photosynthesis began more than 2.5 billion years ago—the Great Oxidation Event. But it took hundreds of millions of years for enough oxygen to build up in the atmosp ... ...
Sep 20 2011 - 3:30pm
- A Squalodontid Success SLIDESHOW
On a beach in Piña, Panama the tide is rolling out. Faint outlines of skeletal remains rise above the sand. Smithsonian scientists Nicholas Pyenson and Aaron O'Dea along with a team of students descend upon the beach. Their mission: to excavate the ... ...
Jun 22 2011 - 5:47pm
- Whale fossils on the mainland, and into a CT scanner BLOG POST
Fossils Get a CT Scan After a few long days of hard work on the island, we were finally able to excavate and remove , not just one, but two skeletons of an early "toothe ... ...
May 21 2012 - 1:23pm
- Scientists Call New Eel Species A Living Fossil BLOG POST
Video of the Palauan primitive cave eel (Protanguilla palau) Palauan primitive cave eel (Protanguilla palau), a 'living fossil' ... ...
Aug 17 2011 - 12:09pm
- Fossil Jellyfish PHOTO
How long have jellyfish lived in the ocean? This jellyfish fossil is from the Cambrian period, more than 500 million years ago. It was found buried in Utah —an area that used ... ...
Apr 12 2013 - 11:29am
- Early Whale with Webbed Feet PHOTO
This early whale was well suited to life at sea. But it also lived on land. An ancestor of the right whale , Maiacetus lived 49-40 million years ago. It had flipper-like l ... ...
Aug 21 2012 - 8:51am
- Recliner Rudists PHOTO
Where ocean currents were strong, ancient rudist “recliners” lay unattached on the seabed. Notice the pink tentacles, which were used to filter feed. Learn more about ocean l ... ...
Aug 9 2012 - 10:27am
- Biomimicry Shark Denticles PHOTO
Great White Sharks are stealthy hunters and the secret is in their skin. Shark skin is covered by tiny flat V-shaped scales, called dermal denticals, that are more like teeth than fi ... ...
May 29 2012 - 11:42am
- Arm Bone Fossil of an Ancient Toothed Whale PHOTO
Nick Pyenson, curator of fossil marine mammals at the Smithsonian's National Museum of Natural History, holds an arm bone from a "toothed" mysticete from Vancouver ... ...
May 11 2012 - 11:46am
- Smithsonian Scientists Describe a New Fossil Whale PHOTO
Monodontids, the group of whales that includes living belugas and narwhals, are emblematic symbols of the Arctic. However, the fossil record shows that these animals had a much large ... ...
Mar 8 2012 - 12:30pm
- Cretaceous-Paleogene Boundary (65 Million Years Ago) PHOTO
This rendering shows life at the end of the Cretaceous Period, before the impact of a 6.2 mi (10 km) asteroid triggered mass extinctions on land and sea. Dinosaurs are the mo ... ...
Sep 21 2011 - 9:53am
- Sally Lightfood Crab, Galápagos Islands, Ecuador PHOTO
The Galápagos Islands site in Ecuador was inscribed on the World Heritage List in 1978. Located in the equatorial Pacific Ocean nearly 1000 km from South America, the Galapagos Islan ... ...
Nov 4 2010 - 1:41pm
- Dr. Stephen Cairns PHOTO
Dr. Stephen Cairns is a research zoologist and chair of the Department of Invertebrate Zoology at the Smithsonian’s National Museum of Natural History. His research focuses o ... ...
Jan 26 2010 - 11:45am
- Ancient Great White Shark PHOTO
A scientific illustration of the most powerful fish of its time, Carcharodon megalodon , which swam the ocean 30 million years ago. This shark may have reached a size of 20 meter ... ...
Jan 26 2010 - 11:45am