A groundbreaking new study has pushed the timeline of life’s origin further back than previously thought. Researchers have ...

Researchers took teeth from eight different groups and analyzed them as they believe the evolution of tooth shape takes place slowly.

Pentadactyly (having five digits) is, in fact, an accident of evolutionary history. All tetrapods descended from a common ancestor that just happened to have limbs with five digits. And over the ...

Scientists assumed most forms of life before the Great Oxidation Event didn't metabolize oxygen—but recent research suggests ...

Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor ...

While the common ancestor of vertebrates with synovial joints ... which raises the possibility that they appeared with the evolution of bones. While cartilage and bone are both connective tissue ...