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image: Prehistoric Critters Change View of Mammal Evolution

Prehistoric Critters Change View of Mammal Evolution

By | September 12, 2014

Three extinct squirrel-like species were identified from Jurassic-era fossils in China.

1 Comment

image: Female Pigs May Sense Sex of Sperm

Female Pigs May Sense Sex of Sperm

By | May 21, 2014

The oviducts of pigs exhibit different gene expression profiles depending on their exposure to sperm with either an X or a Y chromosome, a study shows. 

3 Comments

image: Making Sense of the Narwhal Tusk

Making Sense of the Narwhal Tusk

By | March 18, 2014

Emerging evidence suggests that the marine mammal’s long front tooth might help the narwhal sense environmental changes.  

1 Comment

image: Clocks Versus Rocks

Clocks Versus Rocks

By | January 14, 2014

A new analysis suggests that placental mammals originated while dinosaurs were dominant, contradicting a recent high-profile study.

3 Comments

image: Fighting Viruses with RNAi

Fighting Viruses with RNAi

By | October 10, 2013

The long-debated issue of whether mammals can use RNA interference as an antiviral defense mechanism is finally put to rest.

0 Comments

image: Surprising Similarities in Divergent Genomes

Surprising Similarities in Divergent Genomes

By | September 4, 2013

Researchers find genome-wide evidence of convergent evolution between bats and dolphins.

3 Comments

image: Ancient Mammalian Fossil Found

Ancient Mammalian Fossil Found

By | August 16, 2013

The chipmunk-sized Rugosodon eurasiaticus is the oldest representative of a prolific and long-lasting mammalian lineage.

0 Comments

image: New Carnivorous Mammal Discovered

New Carnivorous Mammal Discovered

By | August 15, 2013

The olinguito, misidentified by zookeepers and museum curators for nearly a century, is the first new carnivorous mammal discovered in the Western Hemisphere in 35 years.

4 Comments

image: Fossils Snarl Mammalian Roots

Fossils Snarl Mammalian Roots

By | August 7, 2013

Two newly discovered Jurassic-era fossils suggest drastically different mammalian origins.

2 Comments

image: The Roots of Monogamy

The Roots of Monogamy

By | July 31, 2013

A new analysis suggests that infanticide drove the evolution of pair living in some primate species, though another study reaches a different conclusion.

4 Comments

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