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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 to be...
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Monodontids, the group of whales that includes the belugas and narwhals...
A time-lapse video shows researchers from the Smithsonian's National Museum of...
Two fossilized teeth from a megalodon ( Carcharodon megalodon ) dating back...

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Offshore Peru, during the Eocene (~56-34 million years ago), showing three archaeocetes (ancient whales), along with a previously described fossil penguin. Top to bottom: Perudyptes devriesi , unnamed protocetid, Ocucajea...
How long have jellyfish lived in the ocean? This jellyfish fossil is from...
This well-preserved fossil is the only intact partial skull ever found of a...

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When you're standing in a museum surrounded by fossils, you can almost imagine drifting through time to when long-extinct...
A time-lapse video shows researchers from the Smithsonian's National Museum of Natural History and Smithsonian's Tropical Research Institute racing to excavate the fossil of an extinct toothed whale...
Paeleobiologist Dr. Nicholas Pyenson, Curator of Fossil Marine Mammals for the Smithsonian's National Museum of Natural History (NMNH), set out with Jorge Velez-Juarbe, NMNH Research Student and Ph...
Often it's the tiniest organisms that do the most harm. One example is microscopic algae, which can grow rapidly to form harmful algal blooms . Such blooms (some are called "red tides") create...
Two fossilized teeth from a megalodon ( Carcharodon megalodon ) dating back more than 20 million years. Their teeth can reach a diagonal length of seven inches! The ancestry of great white sharks has...
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 Island. This is the second specimen...
A relative of insects, trilobites lived on the ocean floor during the Cambrian period. Some would curl up like pill bugs while others burrowed underneath sand and mud.
The great predator Hurdia victoria’s prey consisted of trilobites and other smaller animals crawling on the seafloor.
Brian Huber studies fossil organisms known as “ forams ” to learn about climate change in this video snippet from the Smithsonian Marine Collections video . More about world climate change can be...
Fossils from the Cambrian period are found throughout the world. The Chengjiang fossil site in china is famous for containing about 196 species of fossils, many from the Cambrian period. The Burgess...
This well-preserved fossil is the only intact partial skull ever found of a white shark that lived about 6.5 million years ago called Carcharodon hubbelli . The fossil jaw contains 222 teeth, some in...
Dugongs , along with manatees , make up a group of marine mammals called sirenians or seacows . In the modern world, only one species of seacow is found in any one place in the world. However, the...
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 "toothed" baleen whale from the rocks near the Carmanah...
Monodontids, the group of whales that includes the belugas and narwhals swimming our ocean today, are emblematic symbols of the Arctic. However, their fossil record, although scarce, suggests that...
The Haplophrentis carinatus had two oar-like appendages (called “helens”) used to stabilize the creature and help it move along the ocean bottom.
Long before great white sharks appeared, much larger ancestors roamed the ocean. This giant ancient shark -- the Giant Megatooth ( Carcharodon megalodon ) -- was probably big enough to eat a whale.
My graduate student Jorge and I are departing today for Panama, to excavate a fossil whale that was discovered by an undergraduate student working with Smithsonian Tropical Research Institute...
Editor's note: Read Nick's first blog post about "toothed" baleen whales to see what their team is excavating on Vancouver Island. We departed from Port Renfrew on Tuesday morning on the Michelle...
Dr. Karen Bice studies the foraminifera in ocean sediment to better understand climate change. More about scientists studying world climate change can be found in our Climate Change featured story .
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