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Showing results for "mammal"
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A hippopotamus-like creature swims underwater
Article

Flippers or Feet? An Extinct Mammal May Have Been Replaced By Today's Sea Cows

In the seagrass beds and kelp forests of the Oligocene-Miocene transition, nearly...
August 2016
Two skulls belonging to extinct marine mammal herbivores used in the new study, both from the Smithsonian’s collections.

When Did Today’s Whales Get So Big?

More recently than you might think, say scientists who scoured the fossil...
July 2016
A 3-D reconstruction of the skull of a fin whale fetus.
Article

Keeping An Ear Out For Whale Evolution

Large whales are notoriously hard to study. Except when rising to breathe, they...
March 2015
Fossil Whale Digsite at Cerro Ballena, Chile
Article

The Whale Graveyard Whodunit

One of the ocean's tiniest organisms often does the most harm. Microscopic algae...
March 2014
An illustration of multispecies communities of dugongs from India, Mexico and Florida
Personal Perspectives

The Discovery of Multispecies Communities of Seacows

Sirenians, or seacows, are a group of marine mammals that include manatees and...
January 2012
A shark tooth embedded in a bone
Article

What the Megalodon Left Behind

The largest shark ever to exist on this planet, Carcharocles megalodon, could grow...
July 2018
Two nurse sharks hover over a baited cage
Lesson Plan

What is El Nino?

This activity explores the potential for climate variability and change to trigger...
Fri, 03/19/2010 - 14:51
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This 1874 illustration of California gray whales (Eschrichtius robustus) shows a group of individuals at the edge of their modern day range in the North Pacific Ocean, blocked from traveling further east into Arctic waters by thick ice barriers.
Article

In the Arctic, the Times, They Are a-Changin: You Can Pitch in to Understand How

Invasive species are often in the news these days, with human-transported organisms...
November 2015
A researcher holds an arm bone from a "toothed" mysticete whale from Vancouver Island.
Personal Perspectives

Dispatches from the Field: Treacherous stream crossings and a new fossil find

We departed from Port Renfrew on Tuesday morning on the Michelle Diana, a boat...
May 2012
Nick Pyenson points to a skull and skeleton of a fossil whale.
Personal Perspectives

Excavating a "toothed" baleen whale from Vancouver Island

The whales that we see in today's world can broadly be split into two groups: those...
May 2012
Smithsonian Scientists Dig a Trench Around a squalodontid Skull
Personal Perspectives

Expedition to Excavate a Fossil Whale

My graduate student Jorge and I are departing today for Panama, to excavate a...
June 2011
Tiny "flakes" of marine snow.

Marine Snow: A Staple of the Deep

Snow on land can make some people grumpy, but the magical-looking flakes and a...
January 2013

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